^Id like to add, if I might: Creating HTML wireframes to iterate back and forth with your agent of choice is a great way to work on UI/UX without the heavy token burn that comes with making iterations in the app code itself. Planning out backend and frontend in detail before implementation is the best way, I find, to save yourself from burning unnecessary credits.

As Ben points out, creating artwork and detailed assets to your liking is definitely most fun when you do it yourself. It's a great way to learn a new skill or two while you're at it.