The upward gaze is cool and sets this apart from more traditional BUOW frames. I might rethink the crop to lose the gray stripe at the top. It does more to distract than it adds, especially with the already-beautiful green-yellow surrounds. Cropping
to leave lots of room above him was wise.
For me as you scroll up, a story happens by way of imagining what he could be thinking or staring at. Thus, it feels like maybe removing as many distractions up into the beautiful green and then whatever (remove the gray, blend it, whatever) is a good bet