For my butterflies I've used Melon Mambo, Pink Pirouette & Rich Razzleberry.
I love the 2 step stamping method using the photopolymer stamps. Its so easy but if I could give you one tip today it would be this:
Don't stamp the body of the butterfly until after you've die cut the shape out in your Big Shot.
You can then line up the butterfly body stamp with the paper so that it's in exactly the right place. Its pretty much impossible to be able to stamp this perfectly beforehand. unless you are not die cutting your butterfly of course.