Most of the flags I use come from the Internet. Any flag you want is there, but It might not look the way you want it to. Usually what you get is a picture of it after a battle. So sometimes you have to rework them.
Heres a flag I want to use in the future, but I didn't want to use it looking the way it did. So I repainted it.
The one on the left is before, the one on the right is after. If I do decide to use it, I'll make 2 color copies for front and back and put them together and not use the original.