How to compliment a thin figure

I’m 5′ 11” and only 129 lbs. I am 16 and have a size 28 waist. Needless to say, I’m small. I have a very lengthy body, but I also have a very athletic trim, so I’m not just thin thin. I also have “man curves.”
What I’m looking for are clothes that will compliment my thin figure. (Not JUST dress clothes, both please)
I’m always told how thin I look, whether in a suit (jacket off) or just casual clothes. I’m also told because I look so small I look awkward in jean. (Ouch)

I’m VERY confident in how I look, sometimes I have too much! I just always know I can look better. Help?