I like this. If I were to make a suggestion, it would be to darken the background some. The background highlights are competing with he fine lines of the evergreen and it comes across as being overly busy.
And, it is a good suggestion but the tips of the mimosa are bright magenta/red and if you darken the BG, you lose that bit of fine line detail. I'm going to reshoot tomorrow 9if the rain stops) against a bright blue sky and see if I can get the better of both worlds.