There are not as many Generation 3 sprites (Ruby, Sapphire, FireRed, LeafGreen and Emerald) becuase they require more colours than Generation 2 but here are the few I've made so far. If there's a pattern I can use, I'll go for a Gen 3 sprite.

I am open for commissions which you can contact me about if you're interested.

Generation 3 Pokemon

Generation 2 Pokemon

Generation 1 Pokemon