gonna try this mario stuff again

[Kitsu]

The tileset looks pretty good. So do the bill launcher and the shyguys.

As for the characters, something about Boo looks weird; it makes him look stupid (as in, incredibly unintelligent). I think it's his eyebrows.

Mario and Luigi also look like they could use a bit of help on their faces.

Other than that, though, it all looks good to me.