Alright just a couple more tips on the comma usage, I feel like these are the big ones I run into when editing a lot of reviews (and writing my own I'm sure)
Use a pair of commas in the middle of a sentence to set off clauses, phrases, and words that the sentence doesn't need (extra information that you want to include). Use one comma before to indicate the beginning of the pause and one at the end to indicate the end of the pause.
Here are some clues to help you decide whether the sentence element is essential:
*If you leave out the clause, phrase, or word, does the sentence still make sense?
*Does the clause, phrase, or word interrupt the flow of words in the original sentence?
*If you move the element to a different position in the sentence, does the sentence still make sense?
If you answer "yes" to one or more of these questions, then the element in question isn't necessarily needed and should be set off with commas. Here are some example sentences with nonessential elements:
Clause: That Tuesday,which happens to be my birthday, is the only day when I am available to meet.
Phrase: This restaurant has an exciting atmosphere. The food, on the other hand, is rather bland.
Word: I appreciate your hard work. In this case, however, you seem to have over-exerted yourself.
Notice the commas around each clause/word/phrase that isn't needed. If you take these out then the sentence still makes sense.