Need help

I have no idea of what to do, I’m working on a beastclan creator but aside from directly editing a PSD file there’s no other way to make your own beastclan, I tried to see with google sheet but I don’t know how to make it work, I could make it work like FR’s scrying workshop but it will require an enormous amount of images for each color/gene/hairstyle/details/etc. combination possible.

I want to make it available for everyone, but if it’s only editable for people with drawing/picture editing programm then what’s the point.

So does anyone have ideas/suggestions? Because I’m kind of lost right now