Sloppy lookin team.

[Taylor]

If my Vikings team turns out fairly poorly, how can I cover up my mistakes and make them look more professional. Do I have to repaint them or can I just simply take time to fix them. I think the paint would be too thick when covering up. So if I can thin it out a little, but so it won't scratch off that would be great. Also if anyone knows how to drybrush please post it here.
Thanks for any answers
Michael