I don't actually see any reasoning for why you haven't gone to college. It sounds like you're doing cool stuff, but I hope you're not trying to argue 'at 18, without college, I'm doing cool stuff, therefore college is unnecessary for people'. Have you heard of the 'gap year' idea, which is common in England/Australia? (maybe other places too, but that's where I'm familiar with it). Many people argue that there are cool things you can do at 18 before you go to college, which will then give you some more experience in the world to decide whether you need college, and how you could most gain from it. Personally I'm a big fan of all high school grads being able to take at least a year off before college to learn a bit more about life, it's great that you have taken this opportunity. I'd love to see some more discussion of 'why I decided to do this, and where I think it'll take me'.

[edit: word choice]