The first thing you need to do if to find some caterpillars!
Your first step is to identify your caterpillar.
Once they reach full size they will crawl to the top of their enclosure and anchor themselves there.
If you see one upside down and hanging that means it is getting close to forming its chrysalis.
Once they form a chrysalis, they will stay that way for 1-2 weeks depending on the type of butterfly.