With a SubD selected, pressing 1, 2 0r 3 on the keyboard displays different levels of detail, with 3 being the smoothest.

The patching you have around your nose is not uncommon in subd work but if you want to get rid of it, its a case of adjusting the polys, getting them to flow and/or join differently.

R@nSiD: Dude alot of work is needed to tidy the mesh up, get rid of those tris and 5 siders, its not really usuable right now for anything. I dont want to sound like Im putting you down, but dont rush it, take a step back a be a bit more methodical in your approach

Cheers
Jay