It could use quite some work.
- shoulders shape is odd at best,
- arms are too long, legs are too short,
- neck is too wide compared to the rest of the body stature,
- shadows on the skin are quite dimmed, that lacks contrast,
- contrast on the seams are excessive,
- lines for the clothes are jaggy,
- highlight on the furthest edge make little sense for volume.
I'd suggest you build a simplified version, cell-shading style, to get shapes right before you push further shading.
He's got character, though. Try keeping the eye position in your revisions.