how do you get a flat stomach, 127ish pounds 5’0″ 16 year old girl?

i work out pretty much every day, treadmill thirty minutes burning 300 calories, usually 3.5 speed 15 incline, then stretch, some crunches, few pushups, lift weights, i thought it was all in the cardio. first u have to burn off that layer of fat and i cant seem to do that no matter what i do ive drastically cut my calories to like 1500-1700 and that might be an over estimate i usually just drink ensure instead of eat a lot look heres pics how far am i away from looking decent? what am i doing wrong? im really confused. http://tinypic.com/r/5vnchu/4

http://tinypic.com/r/30igleo/4