Marcellus' hair looks really thick, I mean like he was wearing a wig. The curve at top right part of the top of his head. Without it would look normal.

Edit: Let me show you:

And I figured that blur is dust. But when it appears in front of the dark cape, it kinda messes with what we think we're seeing there. I'd suggest trying to take that "dust" off from where the cape is showing. Maybe doing same for Epoch's pants.

Edit 2: Oh and because the angle of the sword it looks like Marcellus is stabbing his own leg. You should try to tilt the right end of the sword, the blade, more upwards and narrow it from the right end too.

I hope that helps!

I'm just trying to help!

Oh and just to point out the obvious. Judging by the white lines which indicate the direction of the slash, it looks like the attack wasn't going to hit in the first place. I'd either make the blade longer or revise the movement indicators.

Yup I can see the white lines on his leg now, making it seem he is sliding backwards, but they quite don't point out the idea well enough. Try starting Marcellus movement lines from the position he was first, and end them to his current position.

I really thought it looked great the way it was; however, you make some good points!