Hello...A very nice capture of a beautiful butterfly...As the butterfly is the main subject it would have been nice to have cropped out part of the background..other than that you have done a very good job...if you are going to take more pictures of butterflies here is a tip..... simply spray sugar-water onto the flowers now you should easily have enough time to photograph a butterfly as it settles on a sprayed flower to slurp up the buffet of sugar liquid offered.....All the best...Mick..