If it’s just a one-inch photo, it’s easy. 1. Set in the menu bar: width 2.4CM, height 3.4CM, resolution 300

2. Use crop in the toolbox Use the tool to crop the photo

3. After finishing, click "File" on the menu bar - "New" - Width 12.7cm - Height 8.8cm - Resolution 120 pixels, cm (because it is electronic (So ??the resolution cannot be too high) - just click on white for the background

4. Start formatting the 1-inch photo as follows:

Use the move tool in the toolbox - — Move the 1-inch photo to the new layer in step 3 — first hold down the alt key on the keyboard and click the mouse to copy the photo — repeat this until there are four photos

Finally Click on the layer in the menu bar - merge the visible layers and save it. It's very simple.