I've done an edit of the face: http://i234.photobucket.com/albums/ee166/manlygaming/super_edit.gif
I'm not going to lie, this is pretty bad, not the worst out there but its still pretty bad. My suggestion: Use some reference, pixel works(Only because this is pixel art, if it weren't, I wouldn't suggest it), photos and real life are your biggies. I've even taken the liberty of snatching a few images from google: http://www.moviecitynews.com/arrays/images/2005/superman/BrandonRouthasSuperman.jpg http://www.supermanofsteel.com/Pictures/1681_1.JPG.jpg http://cuzoogle.files.wordpress.com/2006/11/superman-returns-20050907113002822-000.jpg
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