Make two layers, one with rounded corners and one with pictures! The size of the tablecloth should be consistent with the rounded square!
Let the scissors hand in the back be on another picture! it doesn't matter
And the background of the tablecloth doesn't need color!
Just do it.
In PS, a separate layer is set for people photos, which is different from the background layer. Then draw a rounded rectangle with graphics tools, create a path, select the rounded selection with the path, then reverse the selection, delete the selection, and then stroke.