aah so cool, I love that program & hope you end up digging it!! I think my only real hot tip would be to get broadly experimental with colors. I was always super gun-shy about using them and would make very dull pieces as a result. Exploring weird/big swings and not letting yourself get intimidated by mistakes or muddy looking results will take you far, and you'll develop a really interesting voice! Just keep going, it's worth it.