Hmm... 7 years old...
Well, I'd still retain my art skills because I remember drawing back then so, that shouldn't be a problem later when I re-learn Flash.
As for girls, well, second chance in getting loads of girlfriends later, so that's cool!
Downside is that I still live in a shit area, so that might have an affect on my personality, mental health or whatever.
To some it up, both good AND bad things would happen if I woke up to find my age was exactly my Newgrounds Level.
Fucking balance...