I see it hasn't been commented yet, so consider this post as a thanks for helping me out, mate.
First look at the sprite and i can clearly say its a A-grade sprite, however, there are some things i don't like about it. But first thing's first, let's start off with positives.
I dig the cape and the way its shaded and you frayed its' end, that gave it a troll feeling of not caring about clothes, however, i dislike the idea of using so many colors, which i'm going to talk about later.
Another thing i like the most is his head, huge yellow eyes and a big, troll-like nose. Last thing i enjoy is the way you pick colors, red into pink and violet, lime gray-ish green into blue, bronze into purple etc, good job.
What i dislike about it is how many colors you use, it may seem that you used gimp or photoshop' brush to shade it. The less colors the better imo, but that's my opinion.
Cheers, mate.