Mapping looks good
Details are ok for a start
Can't wait to see the next wip ;)

Good job

Looks like a great start!

It's a bit blurry or faded at some parts tho, I think it would look better with more detail at those places and not blurr.

Looks real nice so far tho!

For me personally, I think it's a bit too rounded, I'd like to see more sharp edges, like MC his helmet has. Like how it looks so far though, the idea is nice, just the shading might need to be sharper.

I agree with Hamza, make some of the lines sharp instead of round.
Good job so far!
8/10.

please add used programs to your first post

Nice mapping. As already said before, it's too rounded to be a masterchief mask. Not a big fan of the visor, i don't like the highlights on it.

Which colors are you going to use?

Some of the lines that are already colored in seem a little messy and not to straight. Some parts of the line are thicker than the other end of the line. Make you lining even and try maybe to make it bolder. Although this head looks awesome and I know it will look even better when you finish.