I love this kind of flower. I like the contrast and the sharpness of the image, but I would have chosen a 1:1 crop.
How did you achieve the black background?
Gerberas are one of the most common but beautiful flowers. Especially with these lovely dew drops! Looks really awesome. I would try to play a bit with dode & burn or to darken the outer areas a bit to get a more plastic look if you isolate the flower from the black background. But that's just an idea from me. This has no affect on the overall quality!