You don’t need to make your card stand up. Start with a 5x7 blank project and go from there.
I made these in 2006/7 when I first started using fancier graphics on my cards. When I discovered artist designed graphics for my greeting cards, I realized I could use them to digi-scrap -- and a hobby was born
As you can see, I was learning all sorts of PSE techniques
pcCrafter graphics - they are no longer in business
Sony A7III FF mirrorless, Sony FE 200-600mm f/5.6-6.3 G OSS lens, FE 24mm F1.4 GM lens, Sony FE 24-105mm f/4 G OSS, Minolta 100 macro. Currently using PSE 2021 and 2018, but had PSE 11, 10, 8, 6 and 3; PS LE and full PS.