More of my artwork. Critiques welcome!

Hi, everyone. Here's more of my art. I tried using the advice some of the users on here gave me. Still, I can't help but notice that there's something off about Superman's proportions. I think it's his left leg. Anyway, critiques are always welcome.

These are awesome!!

@uncanny_xfactor: Thanks! Here's another one I just finished.

I'm diggin' that Batman

@comicman1000: Delicious Flash.

One more:

Cool! Great job on Batman!

Great work man! You're style is a bit like Frank Quitely.

@knightshadow:Thanks!

@storcks:Thanks! Thing is, you're not the first person to say that.