Spriting

Heya everyone! I've been spriting quite a lot lately, and I was just wondering... What do you think about my sprites? I'll upload a few here, and please, criticize them! I'm thinking of maybe releasing a RPG Maker Resource Pack on Steam with around 50-60 sprites, it'll cost 2 bucks or so, but before I can do that, I need to make sure my sprites are something worth buying, and not just throw random things together and sell them...
I'll upload 5 sprites or so this week, all with a watermark, I don't want to give people free stuff while others pay for them :3

Oh and if I never finish the sprites they'll be uploaded here and at forums.rpgmakerweb.com/index.p… .

Have a nice day! ^^