Small Business ideas for a 13 year old.?

So, I'm thirteen, and I need money for this year's snowboarding season. I'm a terrific Graphic Designer, infact, better than most college kids going for a degree in Designing. I tried working for a company once, but freelancing was ten times better. Also, I'm a good artist in general. So does anyone have any ideas for me?
I was thinking maybe going around downtown offering art work to shops in whatev r way they need it, flyers, websites, ect. But I dunno. I don't think that would hold up. I can basically do any labor. But I need something that would be a solid, and I need to make 500-700 dollars within 2 months. Is there any hope for me?

I set up my own web site design business at 14.

IT work is the best thing you can do at this age. There is plenty of hope ...

Go on Craigslist and find jobs. Show off what you've made so far and you'll find work.

Other then that just network and talk to people about it you'll be amazed at who your friends of friends are. Your school website may even need help with graphic design.

Do not let people exploit you either. Charge them the fair market value for your work. Ball park will be $20 - $40 an hour of work.

Good luck!