I can see your problems but you also have something many of us dont have...you have an actual game reference u can go to.

If u cant find reference images go into your game or borrow a friends game for your computer and take screenshots.

Look ingame at the geometry of M.C and it will help a great deal with modeling. Just some hints for ya.

Also the visor in the pic you showed of your model is way to big...its a vizor type thing should be thinner IMO. just my 2 cents