Working on my next costume - The pants

I took advantage of the long holiday weekend to work on my next costume. I have had this floating around in my head since last October.  At the last Comic-Com my friend and I started brainstorming about what we wanted to look like for this years event. We thought a Harry Potter steampunk look would be the one. Maybe a steampunk auror. I would like to wear this to the premier of the Fantastic Beasts movie in November too.
Here are some photos on the process of assembly for the pants. Here are the pants all cut up and ready to sew. And the finished pair. Plus a close up of my tester showing piping for the pants. The fabric for the pants is stretchable so they fit nicely.