Denise, I like your eye on this. I think you got some really good detail on most of the leaf but it seems to get a bit blurry towards the upper right. I'd recrop taking a bit off of that area to leave more of the infocus sections. Also, next time, leave a bit more of the stem on the left (more on the ROT's) and I think you'd have an even stronger composition overall.
If you do decide to leave the comp as is, I'd clone out the two dark areas in each of the top two corners.
Denise, I did a 7x5 crop, cutting off the top area. I also did a little dodging on the few dark spots that were left. While I was at it, I pulled down the high tones in curves and did a blur and liquify on the top left corner to soften the colors there. I think its a nice contrast to the ultra-sharp, spikey look in the rest of the image.