Here are the latest pics of this guy. Not a whole lot more has been done as I was stuck with the feeling it needed something more. The 3rd eye and the eyes on the shoulderpad are what I finally decided to go with and now I am happy with the model and have started to finally finish painting it.
Pics of the greenstuff eyes on the head and shoulderpad

A bit of the base to show the progress on the downed battlesuit.

Sorry about the delayed replay Hayit, didn't see the post you made. Yellow or gold scales may work and if I were to do it I would lean towards gold i think. However, one thing I am wondering about is where you are referring to? On the wings or the body?