We are looking for a "envelope" for a 5"x7" card that iron cross opens with the bottom flap having a glued 5"x2.5" pocket.
Any chance you have a photo or sketch of the shape?
Yes, see attached image. We need final size when folded to hold a 5"x7" card in the center and 4.25"x6" card in the "pocket".
The simplest way to do exactly that shape is to use Origami: https://boxshot.com/origami/ - the software for folding paper shapes.
If you need to do it in Boxshot, I would use Extrude shape for the main layout and then another one for the top part of the envelope (it is at the bottom on your image).
Let me know if you need any further assistance with this.
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