Dentists will be able to fit braces to your teeth no matter where they are or what size. If an extraction is needed, it is best to talk to your family or a trusted adult of what to do rather than attempting it yourself, as this is dangerous and can hurt A LOT. Please take care of your teeth, and know regardless of the condition, a trained dentist will be able to take you in the right direction!
Glad to see your super excited about your braces, and look forward to hearing how it turns out!