This was a very well-done piece, I don't really have any improvement tips, but I have an idea that might(?) enhance it. You could potentially use the pink of the pheromones to guide the viewer's eye to her foot. Since pink and green are opposites on the color wheel, you could use the stark contrast of the colors and some composition work to make a pathway that will guide the viewer directly to the focal point.

Like I said, really good image and nothing wrong that I can see right off the bat, but the colors just gave me an idea for something more.