Some criticism wanted for a design

[WannaSprite?]

So I was playing around with some Metal Slug sprites to make a custom sprite and came out with this:

It's supposed to be wearing a jump suit and a mask as it's some sort of Experiment created in a lab. If you have any criticism just tell me it would be really helpful! ^ ^

((Sorry if the cropping is a bit wonky))

[JewyB]

I think the character sprite is great, but the smooth edges on the character conflict a bit with the jaggy edges on the weapon. Not sure if this is fully custom or edited? The shading and detail in the black is fantastic though.