The art was good obviously, except that you didn't draw the guy, which made it awkward looking, besides that, where did that height chart information did you get from? Or did you assume it yourself? Well I am 17 and I am already at 178cm already, and a lot of guys in my class are taller than me, i mean over 60%, which most of them are already over 180cm and so common around that I think it is normal for this height and made me felt that I am short. >.<
I even played the Japanese game Unrecorded Chronicles 3, which on the characters bio height, also made me assume that mostly, generally, the average height for guys and even the girls should be higher in Japan. >.>