Mario Platformer Sprites n' stuff

[Gors]

Whoa, good job! But honestly, there are some parts that need improvement (sorry if I couldn't say it before, I was on a hurry). For example:

Running animation: I think you should make the arms a bit more straight (like the SMW one, so it looks like he's running very fast). Also, gluing the walking legs in a different position doesn't make it good, too. Look the last running frame: Mario looks skinny as hell. You need to make his size constant.

Swimming animation: The way Mario bends the leg is impossible: you must make it more aerodinamic (check the SMW swimming animation for a good ref.) Also, his body could be bending a bit (maybe 1 px) to make it move a bit. Swimming with your body staying still is impossible

And you didn't fix his butt in the ground pound but yeah, I can wait