I'll try, but towards the bottom I can't really tell where the hair ends and the darkness begins. Going to guess, so uh, it may end up looking wrong.
Ok see if this works. It's quick, dirty, and you have a lumpy left shoulder in it but eh, don't we all.
Not sure how clean you wanted it but I probably can't do much better than that any how.
Edit: Oh missed the 'professional' part. You'll have to find someone else then.