No, it's not. Please reconsider your usage of the forum. If you cannot see anything wrong with this, then neither your art nor your critical eye are a boon to this forum.
Meta: You should probably AA from black a bit more, the lineart still 'shows' under the coloring, suggesting a lack of overal coherency in coloring. Nearly every pure black detail calls for smoothing as I see it.
How about a neck? Strange without.
The burst of the gun is a bit more symbolic than I sense you were going for. Muzzle flash from an energy gun would probably be better shaped from an oval-shaped basic form, no?