I like the cropping/framing with both #s 1 & 4, but I think the toning is to strong/dark, with #2 it seem hard to see the butterfly and #3 I do not like the flower cover the butterfly
i would say color is probably the way to go on butterflies, but they are different. i like the comp on 1 and 4 the best. the tilt on #2 just doesn't work for me, it goes against my eye instead of flowing... can't really explain it... do you have #4 in color?