tiny questions

I was just wondering if there's a time limit for how long you can do a character sheet before you submit it,
and then I was wondering if you have a guide to the writing style that you use here or if you can just use your own
and then I was wondering what class my character would be in if she is 15 and born in november?

Thanks! I'm going to the holidays just now and I don't know how long I'll be away, but I'll be away for 1-3 or 4 weeks. Anyroad, I'll try to finish my sheet and spend some quality time with mr. spellcheck so i can submit it when i'm back again.