Cool and different concept! I am not the most experienced painter (I still neet to learn to control gradients), but i took it also as an exersice for myself, and i am sure that you would have figured out some of my improvements yourself if you had worked on it a bit more. Here is what i would do. Overall the colors work well. I can see that you seem to be using dodge and burn a lot (is this true?). I would personally hesitate to use it too much, until the end phase of the painting, especially for realistic painting. For comics in lineart it works fine though. The palette you have chosen is quite difficult, since the spring green and the rose red are strong complimentary colors (a praying mantise is actually more chartreuse green, and i find that this spring green is pretty rare in nature, if it is not in a shadow, but this looks cool too,). I decided that a yellow background would be the best for tying them together. I moved her anatomy arround. The most problematic thing for me was that it was hard to see wich leg was in the front. I think it is very unlikely that her flower dress would drape this way arround with her right leg in front, so i actually tried flipping the dress. Her right hip is also raised, so i made her lean on her right foot. Dont forget her clavicle. Her armpit was quite low and her legs were quite long. i also moved her head forwards and added a shade under the lip. It could help to include a bit more mantis anatomy. Nobody sais she has to be realistic though. Sawteeth makes it read more as an insect. Perhaps you could include the fact that mantises tend to appear to look to the side?