How much will a 10 pound different make in my appearance?

I'm a 15 year old girl, 5'7, and 155 lbs. I'm doing weight watchers combined with cardio and I'm trying to lose at least 10 pounds. I want to get rid of SMALL love handles and a little bet fat. But I have a large bone structure ( no lie I'm not just condoning that I'm fat.). Any ideas??