I like the direction Ram took. In the pictures the light purple/pinkish tones along the back of the head (I am thinking) should be toned into the surrounding greys/light blues. View the reference pics of the undermask to see kind of what I mean. If you decide to add more or the neon blue dots like you mentioned, perhaps keep them more along the outside edge of the top of his forehead details and not in the part down the center? My rationale for this is on his body, he only had the oddball neon blue dots along the outside edges of his body on top of the weird gray layers--olive drab(?)--light blue fade thing he had going on. None of those little neon blue spots were along the center section of his body. Also, in zooming in, it almost looks like the neon blue dots have a tiny center that is either lighter blue or perhaps white?
Andy, There are still the olive tones in places to do which will help the pink sink in alittle more, but as they only show up on the one photo i am not sure or convinved it is not lighting playing tricks, as the full outside body shots, show no such colours, but i aill add maybe one light pass anyway.
I said i will add a few bue spots on the head, i am not going to make his head look like a glow stick do not worry
I do not think the spots had a white centre, i think you are just seeing pale pixels from zooming in so much lol.
back in work again today , but i hope to get back on this on friday. and finish him in a weeks time. ( tempting fate i know lol )