Introduction
The Listybox system looks for specific layers in your PSD file when rendering mockups. If these layers are not properly prepared, the render process will fail or your artwork may not appear.
In this guide, you'll learn how to prepare your PSD file and how to solve common issues.
📥 Download Reference PSD: Reference PSD
Required Smart Objects
Every PSD file must contain 2 required smart objects:
1. print_area
The area where the user's uploaded artwork will be placed. The system automatically places the image inside this smart object.
Properties:
Name:
print_area(all lowercase, no spaces)Type: Smart Object
Content: Can contain Pattern Overlay or similar effects
Position: At the top of the layer structure
Usage examples:
Print area on a sweatshirt
Chest area of a t-shirt
Design area on a bag
2. color
The layer where the user's selected color will be applied. Changes the main color of the product.
Properties:
Name:
color(all lowercase)Type: Smart Object (usually solid color fill)
Blend Mode: Multiply
Opacity: 100%
Position: Just above the base layer, below print_area
Usage examples:
Fabric color of sweatshirt
Main color of shoes
Outer surface color of bag
Layer Structure and Order
The correct layer order should be:
Layer descriptions:
Layer | Description | Required |
print_area | Artwork area | ✅ Yes |
color | Color change | ✅ Yes |
base | Product's main texture | ✅ Yes |
human | Model image | ❌ Optional |
bg | Background | ❌ Optional |
Naming Conventions
Pay attention to naming:
✅ Correct:
print_area color base human bg
❌ Wrong:
Print_Area (uppercase) print area (has space) printArea (camelCase) PRINT_AREA (all caps) design_area (different name)
⚠️ Warning: The system searches for these exact names, so rules must be followed strictly.
Grouping and Isolation
Why is grouping necessary?
Placing the print_area layer in a separate group is required. Reasons:
color layer should not affect print_area
Artwork should remain independent from color changes
Pattern Overlay and other effects should not break
How to do it?
Select the
print_arealayerPress
Cmd + G(Mac) orCtrl + G(Windows)Set the group's Blend Mode to Normal (should not be Pass Through)
Name the group as you wish
Wrong structure:
print_area color base
Correct structure:
Common Issues
Issue 1: Artwork didn't render
Symptom: Color changes but artwork doesn't appear. Cause: print_area layer's Layer Style > Blend If settings are wrong. Solution:
Double-click on
print_arealayerGo to "Blending Options" tab
Find "Blend If" section
Check the right slider on "Underlying Layer" row
Slider should be at 255
Underlying Layer: 0 ════════ 255
↑
Should be 255
💡
Why it matters: - At 225: The underlying color layer affects print_area, artwork disappears
At 255: print_area is completely isolated, artwork is visible
Issue 2: Color doesn't change
Possible causes:
Layer name is wrong
- Wrong: Color (capital C) - Correct: color (lowercase c)
Blend Mode is wrong
- Wrong: Normal - Correct: Multiply
Clipping Mask is missing
- color layer should only affect base layer - Right-click > Create Clipping Mask
Issue 3: Artwork is affected by color changes
Symptom: When color changes, artwork also changes, appears faded. Cause: print_area is not in a group or group's Blend Mode is wrong. Solution:
Put print_area in a separate group (
Cmd + G)Set the Group's Blend Mode to Normal
Keep the group above the color layer
Issue 4: Smart Object content disappears
Solution:
Double-click on the smart object
Make sure the content is complete
Save with
Cmd + SReturn to the main file
Save the main file with
Cmd + Sas well
PSD Preparation Checklist
Check before uploading your file:
Required checks:
☐
print_areasmart object exists and is named correctly☐
colorsmart object exists and is named correctly☐
baselayer exists☐ print_area is inside a separate group
☐ Group's Blend Mode is Normal
☐ color layer's Blend Mode is Multiply
☐ color layer's Opacity is 100%
Layer Style checks:
☐ print_area > Layer Style > Blend If > Underlying Layer right slider at 255
☐ Pattern Overlay is properly configured
General checks:
☐ All layers are visible (eye icons on)
☐ Unnecessary layers deleted
☐ Smart objects have complete content
Example File Structure
Structure of a properly prepared PSD file:
Tips
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Test it: Before rendering, in Photoshop:
Change the color layer's color → Only product color should change
Put a different image in print_area → Artwork should change
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Create a template: Save your first working PSD as a template, copy this structure for new mockups.
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Be consistent: Use the same layer structure and naming for different angles of the same product.
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Backup: Always backup the original PSD, save changes as separate versions.
