No waist?

Hey guys so I was just looking for some opinions and tips. I'm currently 17, 5'10 and 9st 10lb so I'm a decent weight for my height however I would like to achieve a smaller waist. I have quite small boobs 32/34 C's depending where I shop and I feel because of that my figure is quite boring and straight. I did have a bit of a booty going on but I've been completely slacking as well. Do you guys have any tricks on how to slim down the waist not necessarily "fast" but something that wouldn't take forever? Also my problematic area is my love handles so anything to help with that would be good too.