Custom box printing should be approved surface by surface. Record the outside and inside artwork, the base material, print colors, finishes and the version being approved. Check that the flat production artwork, assembled mockup and physical sample describe the same package before production begins.

This becomes especially useful when a logo or message appears in one view and disappears in another. Resolve that discrepancy while the files can still be corrected.

An open forest-green mailer box with ivory interior and printed inside-lid message
Illustrative outside and inside-lid printing.

A missing inside message exposed a gap in the mockup

A customer reviewing a box video asked whether the inside would carry the wording shown in an earlier image. Our initial reply treated the interior printing as an additional request. After checking the artwork, we corrected that reply: the inside lid printing was already in the production artwork, but it had been left out of the 3D mockup.

We asked the designer to add it to the mockup. That correction clarified the intended printing before the physical sample was completed.

The customer had done something valuable by comparing the views. Checking spelling on the outside had not answered whether the inside message was included and shown correctly. The next approval needed to identify each printed surface.

A flat file and a 3D mockup answer different questions

The flat artwork defines the print content on the production template. It should identify the relevant surfaces, artwork positions, colors and separate finish elements. The assembled mockup helps the buyer understand what those surfaces look like when the box is opened and closed.

A discrepancy between the two needs a specific explanation. In the customer example, we found an omitted interior graphic in the mockup. In another project, the issue could be outdated artwork, an incorrect panel orientation or an interior print option that was never included in the quote.

Adobe's documentation on artwork mapping explains that graphics can be applied to individual surfaces of a 3D object. Check the inside lid as a separate surface when reviewing the assembled view.

When something is missing, identify the surface, compare the current artwork and quote, and then update the affected view. Keep the explanation with the corrected revision so the buyer is not left choosing between conflicting images.

Create a print schedule for the surfaces the customer will see

For a simple mailer, the schedule may identify the outside lid, side panels, base and inside lid. A rigid box may use separate exterior wrap and interior lining components. A lid-and-base box has separate parts whose visible areas need to be identified when assembled.

Use the actual structure rather than a generic panel count. PackMojo's explanation of one-sided and two-sided printing distinguishes the outside and inside production scope for mailers and rigid boxes. Its constructions are examples of why the printed components must be specified, rather than assumed from the word custom.

For each required surface, record:

A colored inside surface and a printed inside message are separate requirements. Naming the interior color does not define the logo or wording placed over it.

Keep the inside lid separate from the insert

In a related email exchange, a designer asked which parts of a package interior could use a brand color. We clarified that the selected paper insert's available colors and the printing inside the lid were separate production choices. We also supplied an interior template so the designer could prepare the intended copy.

That distinction avoids unnecessary material changes. If the goal is a colored message on an ivory inside lid, the insert does not necessarily need to become a different material. If the goal is a fully colored insert, that needs its own material and print specification.

Ask to see the inside lid with the proposed insert and contents in place. A message can be correctly printed but hidden by the loaded products, a tall insert or the opening angle used in the presentation.

Confirm orientation on the assembled box

Review the view the recipient sees when opening the box in the intended direction. Check the inside message from that position, then check the outside when the box is closed.

For removable lids, establish which orientation the artwork assumes. For a hinged lid, look at where the hinge and folded panels place the artwork. A flat file may need a different panel orientation to produce upright text after assembly.

If the box dimensions or structure change, return the artwork to the revised supplier template. In our recent email work, the designer sent the final artwork on the most recent box template. That is the useful release condition: the final graphics belong on the current structure.

Our broader packaging artwork checklist covers dielines, bleed and finish layers. This surface review adds the assembled view and the specific interior scope.

Separate color approval from layout approval

A PDF, video or screen image helps communicate placement and wording. Ask which physical reference will be used to approve the required color on the selected material and finish.

Include the full Pantone reference where that is the agreed specification, including the coated or uncoated designation. Pantone explains that the same ink can appear different on coated and uncoated paper. A color name or number alone therefore does not describe the complete production surface.

Ask what the proposed proof includes. A structural sample can check fit and opening. A printed sample may establish layout while using a different printing route from bulk production. For a production color reference, confirm the ink, substrate and finish being represented. PackMojo's press-proof description illustrates a proof made with the actual production material and print facilities; ask your supplier whether the quoted sample includes that level of color verification.

An open ivory mailer box beside matching paper print proofs
Illustrative review of the assembled inside print and flat artwork.

For gold or silver foil and other print finishes, specify the foil area and selected foil appearance separately from an ink color. If your sample is intended only to confirm the structure and artwork, write down which color or finish decisions still require approval.

Approve one identified revision

An email saying looks good can refer to a photograph, a video or a file. Attach the approval to an identified revision and describe its scope.

A useful approval message identifies the box structure and size, the artwork revision, the required outside and inside printing, and the relevant finishes. It should also say whether the approval releases a sample or bulk production.

If a later message changes an inside logo, wording or color, update the revision and collect the corresponding approval. Keep the superseded files out of the production release folder. The supplier and the customer's designer should be working from the same current version.

Check these views before releasing the physical sample

  1. Closed exterior, showing the lid and visible side panels.
  2. Open box, showing the inside lid in the intended reading direction.
  3. Loaded box, showing whether contents or the insert cover the inside artwork.
  4. Flat artwork for every required printed component.
  5. Close views of any separate foil or other finish that needs checking.

For the physical sample, inspect those same areas along with fit and closure. Confirm which aspects become the bulk-production reference through the LEETOP sample approval process.

Questions buyers ask

If the inside print is missing from a mockup, will it be missing from production?

Check the current production artwork and quote before drawing that conclusion. In our example, the artwork included the print and the mockup omitted it. We corrected the explanation and requested an updated view.

Does a custom box quote automatically include inside printing?

The written quote must state the scope. Confirm the interior panels, coverage, colors and finishes rather than inferring them from a reference image.

Can the inside lid and insert use different colors?

Yes, when their separate materials and production routes support the agreed specification. Confirm each component independently and review their appearance together in the assembled package.

LEETOP PACKAGING coordinates custom paper box structure, printing, fitted inserts and sample preparation. Send your current artwork, reference images and required inside message so we can align the printing scope before the sample is made.