a very loose composition.
in this vertical frame, the subject (withering flower and bud) occupy 2/3 of the width from left, leaving the right 1/3 with empty space, resulting in an inbalance that distracts the viewer from your subject (a visually heavy left side) there's also too much space on the top. you probably simply centre on the flower stigmas without much consideration for composition. the 'closing in' of the oddly shaped bud doesn't quite communicate with the withering flower, in fact it looks like an alien object against the flower.
you might want to reshoot this in another frame.