There are a few areas that have banding.

This is really good!  I like the pose, but it's hard to tell if it's action or static.  The other thing is the dark line up the middle of the sword makes it look a little jagged.  If that's the intent, then you did good to serrate it, but if you wanted it smooth, then you might consider lightening that dark line so the contrast is not so defined.  One thing I've learned is that too much detail at such a small level is often more distracting than beneficial to your piece.

I hope that's good info for you!  Good work and keep it up!