Can't speak with authority as a composer here, but I found your piece harmonically okay and spoiled only by lack of logic and form, not lack of melody.

Here's how you may get form: take a few measures of your piece that form a cohesive block, maybe from the beginning to the notes d c#, and play them repeatedly until your ears bleed and you desperately want the music to go somewhere else. Then go somewhere else - do something outrageous on the piano, and then return to your first few measures. Voila, instant verse-chorus form :-) The music should shift when you want it to shift, not just because a new measure has started and demands new chords. There's nothing wrong with repeating a lot and rephrasing a lot.

Here's something born from this kind of methodology. I lack your hearing and harmonic sense, so I just make the music as stupidly obvious and self-similar as possible.