I would say your writing is better then mine, and im twice as old as you!

I hope you stick around the forums, I'm sure you will find alot of useful information here.
I agree with others, you do belong on the road, it is safer. Stay away from the sidewalks, drivers do not expect you to be there. Also, check with your local city, or ask your dad about a bicycle safety / effective cycling course. I have tought kids 5 - 15 on riding a bike with traffic, on the road, and basic bicycle safety. My city offers the course for free, and thoes who complete it recive a free helmet. You also get free food, well worth one day of your life.
What ever you do, keep on riding, you cant give it up at such a young age!