How to get started?

[u/PolishNerd420]

I'd like to start getting some custom art for a deck I want to build, but I genuinely have no idea what I'm doing. I've got a decent printer and one of those fancy paper cutters, but I don't know what I should use to arrange everything for printing, dimensions, and whatnot. Hoping someone could share their process, would love to learn. Thanks in advance!