Skull

Well here goes!

I quite like the design, and it definitely fits the R'ha's external anatomy. It would be cool if you included more than just a profile view as is common in this sort of concept art. From a visionary standpoint, this is great; I'm sure it really helps you to visualize the R'ha in you head which definitely helps you get it into 3D space. It also certainly looks otherworldly, so you totally nailed that. From a technical standpoint, I like what you've done to give the impression of three dimensions; that is, shading and lighter patches. I really docked a half star because it's lacking a front on view.

Overal, this is really great and it makes me VERY excited for what you'll continue to do with R'ha in the future!