[PhotoNewt]

As others have mentioned your problem is that this photo has no clear subject. There is a difference between taking a snapshot and making a photographic composition.

A snapshot (and there is nothing wrong with taking snapshots when needed) is a quick photo intended to document a place or a moment. This is not a creative composition and is what most of us shoot around family events and during vacations. Knowing about composition and photographic technique will make your snapshots much better than those of other snapshooters in the family.

A photographic composition is an artistic rendition of a subject, it begins by selecting a subject, then deciding what you want to say or accentuate on that subject, then deciding how are you going to compose it - all of this BEFORE even setting up the camera. This mental process will lead to the proper selection of exposure parameters, color balance, filters, viewpoint, distance to subject and others to achieve the look that you have already composed on your mind.

In my humble opinion, if you need to analyze your photo after the fact to define what the subject is, is a snapshot!