I really wanted to make my own pantaloons. One day I spent almost two whole hours at a secondhand shop (Fretex in Norway) I found a lot of treasures, among them a very nice and very wide skirt. I decided to try to make pantaloons out of the it, and this is how it turned out. The method I used is very simple:
I cut from the bottom of the skirt up to where I wanted the crotch (don’t cut too far up, as you need much space for your butt. :)). I then sewed it together. There is a rubber band in the waist. I thought about having rubber bans around the legs as well but my mother showed me how to first sew with lengthy stitches, and then pull the thread afterwards so that it gets the wrinkled effect. Don’t pull it too hard as you want room for your feet to go through.