i dunno,but for some odd reason,to me at least, it seems like it would look better if you'd make it so that the red matches the browns a bit more,y'know,down on the saturation a bit or vice-versa
again,thats just me,and since uwi and neiru make the majority... xD
maybe you could just make an overlay thingie that liek,makes the red a bit less saturated at the bottom and gradually makes it more vivid to the top. kinda like you did with the shading on the gun with the black going from the tip and then fading into the base color and all.....
i dunno,im bad at explaining :c
and is that candy thing a tattoo or supposed to be real?xD