Looking for pointers - things you can see that are wrong (shades/colours etc), things that could become a problem later.

Still a WIP
-Horns need work
-Needs to be shaded
-Detailing to hood

I think it does not look at the source, and it looks dirty. And on the original no horns, they are not appropriate at this picture. 3/10 imo. Compare :

and

So I should copy something exactly and have no originality? I don't agree.

Imo the horns would suit if they were an iridescent blue.

you asked for comments, dont complain when someone makes one. users are entitled to their oppinions.

your work is very dark, cant see very much on the sphere, lighten it up a bit.
blue horns would be ugly.
iridescent blue horns would be going too far from the original design. its moving into the realms of fantasy, rather than plausible alternate reality.
keep the concept realsitic

Was expressing my view of originality. I'm open to criticism and comments, but I have views too.

I'll lighten it up a bit. Might blend the horns more by darkening them.

The eyes are a little bit to rounded for my taste, and maybe you could try to sharpen up the line in the middle? But anyway better than anything i could do.

I think it's too wide, for a mask that is... not wide. Oh and, I don't like the horns, I think you're making a Dragon priest mask/iron helmet combo. Not really good, for me

Brought the hood closer to the centre, and made the mask less wide.

Yeah, if you're basing this on the picture, make the eyes more circular, watch some vids on how to improve your mapping.

I like its uniqueness, could brighten up the face a bit but overall great job