This is very creative and a beautiful picture. I like that you have turned the picture that way, since that has a good effect. Also the lips looks like a third leaf and has the exactly same color as the leafs (I guess that was what you were going at in the first place, so you got that right! ) I actually can't think of anything that you can work with on this picture, it's stunning. If I have to say something, you could try making the picture black and white, exept for the lips and the leafs, It could have a great effect!