It can quickly spiral out of control. My best advice is to just hold back. My experience is that most people don't care about a fancy UI they just want somethin

It can quickly spiral out of control. My best advice is to just hold back. My experience is that most people don't care about a fancy UI they just want something that works for them. If you can build this from common basic components it should turn out ok. I think the trick is discovering what your application needs. What kind of interface it should be and what goes where. The it's mostly the same thing over and over again until it's not. Then this exploratory phase starts all over. I like to draw experience from game engines. They typically build success around a few key components that have well defined constraints. As long as the right constraints are in place it's possible to make a fun experience. If you have the wrong constraints and you find yourself constantly battling the system then stuff is all wrong and you need to find a new approach.