A major insecurity!

My teeth are one of the things i absolutely HATE about myself, they're not extremely goofy ..... BUTthey're not back. I'm probably the most bubbliest person you'll come across! And I laugh more then I blink, so from this you can tell my teeth are always on display. I really want braces, Invisalign, ANYthing that will straighten my teeeth. I've been on the list for ages, but I just don't know why I haven't gotten them. My mum is not pushing to get them, she goes by the saying your fine just the way you are" which yes is totally inspirational, motivating and lovely of her. But people are starting to begin their "goofy Ganda" comments. And I'm going into year 11. I really wanna sort my shit out. Ugh. What do I do. I'm 15 btw.