How can you become a fashion designer or model?

I’m only in 6th grade, but I have a knack for fashion. I’ve always wanted to be a fashion designer or model, and now’s the time to make my dream come true. Please tell everything you know.
If some people think my age is too young, go ahead and tell me, but this is my dream and has been for as long as I can remember.
I can’t get a degree since I am too young for one. So, please don’t answer with "Get a degree."
Everyone tells me I’m pretty enough to be a model and they tell me I should model.