I've read numerous articles on the subject of composition, as, I dare say, have most other photography enthusiasts. Golden ratio, rule of thirds, diagonal and triangle rules give ideas for the positioning of subjects within the frame. How to expose for contrasty scenes and what can colour do to enhance ... or spoil ... your photograph. Often you find the shot is missed as you process all this information in an attempt to get the perfect shot! Perhaps you could correct poor composition with clever cropping and poor lighting with bracketing, and then a bit of HDR? This may then allow you time to look for special image without being bogged down with all these "rules".
One gentleman, Johann Itten, suggested that it was contrast that made a good image. Here's his list,
Here's an image I took earlier today - inspired really by the contrast between the hard, grey, man-made concrete and the soft, colourful natural plant growing in the cracks. Does it work? Perhaps not :-( However, if you think it does, is it because the brightest leaf is on an intersection of golden means? Is it the diagonal lines from the right that lead you to the main subject, the plant? Is it, perhaps, the contrasts in the image?
I'm in no way claiming to be expert here. Just reflecting on the situation and jotting down a few thoughts. You may have something to add and I'd encourage you to add these as comments to this post.
Here's some changes in response to comments ...
First a desaturate of the blue background
Second, a tighter crop on the plant.