You will want to cram all of the important GEOMETRICAL PLANES in there to the highest extent and more or less just don't give a damn about the details, I think.
I agree. That's what i've been trying to do to begin with. But yeah certain shapes are quite had.
Piece suffers from low contrast, get some vibrant highlights in there.
Again I'm forced to agree, but given the game environment will actually be dark and poor illuminated wouldn't it create too much of a contrast? Perhaps i should use softer reflections instead.
For a beginner you're awesome at this. Actually you're just very solid at this, beginner or not. Kudos.
Gee thanks, I'm actually amazed how nice most folks seem to be around here. I'm mostly used to 3d modelling communities where people usually are a lot more rude and less helpful.
Well here is a try for me... I could not resist some Warhammer 40k pixel art. Did anyone else play Chaos Gate? I loved that game.

This one is great. You mind if I actually use that one? I'll give you the propper credit of course. Also I've never played Chaos Gate though I really wanted to (doesnt work on xp). I am however, an avid X-Com player.

This is my try at making the helmet. The right is what I started with, and the left is what I ended up with. Hopefully I helped a little!
I love the extra work on those reflections while they're a bit too bright methinks. I'll keep 'em as a reference when i'll add the finishing touches.
Here's my take at this:

it's not the best, but still pretty decent. I a little tip: dont be afraid to make it a little bigger than if needed, and as everyone already stated, dont think about details, but readabilty.
i suggest also working on shadows and highlights on the armor, as they look pretty bland right now.
Looks good but a bit too small. Actually reminded of the regular space marine helmet, instead of the terminator one.
And sorry for the huge reply, but i felt i had to reply to everyone who helped. Once again, thanks a lot. Still have 8 more directions to go. It's gonna be a long way 'till i get some decent animations out of it.

Logged
"God is dead, but considering the state of species Man is in, there will perhaps be caves, for ages yet, in which his shadow will be shown"
Friederich Nietzsche