26. Selections - Select all.
27. Image - Add borders... 5 pixels.
29. Flood fill tool - Flood fill selection with the gradient of step 12.
30. Effects - Plugins - Graphics Plus - Cross Shadow with the default settings.
31. Selections - Select none.
32. Image - Add borders... 1 pixel dark color #644c2e.
34. Back to your 700 × 500 image - Edit - Paste - Paste as a new layer.
35. Effects - Plugins - Mura's Meister - Copies...
Find Afterimage(rotate random) in the dropdown menu.