Various Chrysalises of Black Swallowtail

I've got two swallowtail chrysalises now: one is green, and outside on a gold leaf tansy (notice its skin piled on a nearby leaf); and the other is brown, inside on a stick in an old aquarium (where a monarch larva waits its turn). But I've also got a pic of the outside monarch chrysalis that's hanging from the underside of a morning glory leaf. Many more monarchs are coming down the pipeline on various milkweeds. Isn't it all beautiful? And, time lapse videos aside, how DO they do it? And why can't I? As always, click on the pics to get larger ones. The last image is a view in my garden that to me screamed "fall." I screamed back with a barbaric yawp "like hell!"