This is a really great shot. The model is positioned right, and I especially love the use of browns in this image, rebellious to the notion that you require bright, spectral colors to give an image depth and interest. The bronze lips, the agate eyes, even the locust's color blends well with everything! My two problems with this stem from the edge of the lip and the locust itself. With the locust, it seems to hang on the right of the lip and chin, away from the eyes, rather than putting the locust near the eyes where both can be appreciated simultaneously. Furthermore, with the lip's edge, the photoshop involved is very noticable, and the sharp, geometrically perfect angled mark coming off seems to contrast the wildness of the rest of the image, looking very distracting and out of place. Otherwise, this is a beautiful picture, keep up the good work!
By the way, I have absolutely no experience in photography, modeling, or pretty much any image-based art. So take what I say with a grain of salt.