I'd be happy to help with the smaller sprites. I'm mostly used to doing spriting that's about as low-res as my profile picture, so those sprites should be my kind of thing.
[doublepost=1466692717,1466692561][/doublepost]By the way, my personal favourite for spriting is piskel.
[doublepost=1466692844][/doublepost]The way Terraria sprites are already
technically 2x larger than they look is really helpful here.
[doublepost=1466693152][/doublepost]I attempted the eye patch, since that's pretty much the smallest sprite in the game. Not going to say that no-one here can do better, but I think it's alright.