Your only 16, if you eat normally and stay away from all the junk, DONT't drink POP or JUICE, stay somewhat active...you shouldn't have an issue.
6' and 210lbs does not seem that bad to me. In that pic you look half my size... You may just look that much bigger next to all your friends, but wait a few years when they start to fill out.
I am 6'1" and currently 230 (and dropping!) my goal is 215lbs...I started at 260...
remember that weight is not the best way to measure health. I know plenty of skinny people who are NOT fit. I know plenty of big guys who (aside from being overweight) are fit...
My business card says "You're in luck, I do two things..."