Since I'm also very intent in clearing away all the excess stuff in my life, I'm going to to my best to use fabrics from my, now reduced, stash.
This fabric has zero give in it and the there is very little wearing ease in this pattern, just 2" at the hip. So I very carefully measure myself and check again the finished garment measurements on the pattern pieces.
You can see that the "average" pattern has one back waist dart ...
What I'm doing differently than the pattern is ... pinning instead of sewing the sides because I think a sewn seam will leave quite a mark on vinyl fabric if I need to change it after fitting. I also pinned up the back where the zipper will go and left the side seam open to put the skirt on. I am fitting myself and I wouldn't be able to see in the back to pin accurately after I put it on.
to be continued. Hope I can finish it this weekend.
But, you know, it feels kind of sticky to wear. The pattern doesn't call for a lining, but I'm thinking about putting one in ... stay tuned.