Hi Stacy, I just took the GMAT. These are my scores: V38 Q49 Tot720 IR8 AWA4.0

I am wondering if the 4.0 can hurt my chances of getting into a top 10 school. If so, would you recommend asking for it to be re-graded?
Does the fact I am not a native English speaker (it's my second language) make any difference?

BTW, is it still possible to get a 4.5 now that there's only one AW assignment? I always thought 4.5 means 4 on one of the assignments and 5 on the other one...

Thanks!