Portrait : What am i missing?

Wow ! That's what I want from This post . Thanks Nelsonal sir. Your observation about the photograph is quite right. I learn lot of things . son was looking outside a window at airplane . Generally he afraid but this time i saw in his eyes something else like curiosity so i composed it. I was using a 50mm lens so no space available to compose the shot from front and if i go front it might be possibility. His eyes might start telling something else.. Thanks for your time . I love your comment.