Okay, all finished and emailed. I think the code I used is yellow highlights mean things that were corrected and purple-ish highlights are explanations of corrections/suggestions, or something like that. I did find some errors so please look through it again.

It is NEVER a good idea to be the only one proofreading a paper because you'll always miss something. It's best to have a fresh set of eyes look at it, especially since they'll see things in a different perspective and may ask you to clarify things that seem obvious to you but not the reader. Always have a friend that's good at proofreading look at it, or check to see if your university/college has a writing center. Chances are they do and they'll check your paper for free.