You should probably post the TC in the first post, because people might be looking at this after you took it out of your sig.
The head is small. Did you make it yourself? If not, you must have not put enough of the "body" when you got rid of the hair.
On the cape, the outline is more than one pixel thick on the inside.
The guitar's lineart looks good, but the outline needs shading.
Certainly very good for your first sprite, but not without flaws.