Nice shot... good, smooth background and nice lighting.
Like Denny mentioned, the depth-of-field could've been a bit more generous, such that at least the upper portion of the moth's wing remained sharp. Also, I would've liked to see the shot in a landscape orientation, instead... it would've filled the frame pretty nicely and not clipped the petals to the left. In portrait orientation, you end up with a whole lot of blank space in the top half of the photograph.