Although "opportunistic", I don't think that's the weakness of the image. It's not what you, it's what you do. One could argue that all art is opportunistic... (But I'll leave that one for now!)
The point is, the photograph is too straightforward, too literal, or, as one judge remarked about one of my photos, too perfect. It's what we expect, rather than encouraging us to look at it in a different way. It is also too bright.
Try rotating it about 30° or so, then darken it. This will force us to look more closely, perhaps even question it, making it more mysterious, less straightforward, less obvious.
These suggestions won't turn this one photograph into a masterpiece, but it is a helpful exercise to go through with every (or at least with greater frequency) set-up. Shoot the obvious, then rethink it, look at it from a different perspective, and try to make it unique. It won't always work, but when it does...