Hi !
Colors are really nice and I like your style.
But there's an obvious anatomy problem about the belly

umm she looks way fatter o.O

left-side of her chest -likely- extracted,fill the blank

looks awesome so far,but cartoonish. idk if it's meant to be but it's cool anyway xD .
ENLARGE the work's size so you can use to do big cool stuff  

yea, i do .
anyway, -.- i've edited some frames and added new ones ..

add more frames,
last frame frame would be like this :
?

Reads more as a brisk walk to me. The arms are a little too static, as well. I can see you have a little motion in them, but a little more swing might help. Also, why does the cape kick up and down like that? If he's constantly going forward it should stay flowing.

i was intending to edit the cape, also i've added some swing to the arms :-

Reminds me of a Metal Slug enemy (can't remember which MS in particular). His torso and arms don't move enough. And I agree with what Regulus Awesome said.

umm .. check this out

Bring his knees up a bit more in each step, and have him come off the ground a little bit. That might help it look more like he's running.

Other than that I really like this sprite, especially his sword. Is he wearing a hood or is that supposed to be a helmet?

yup, he's wearing a hood
i've done some improvements :