And here's the finished skirt.
I took the pattern by tracing through baking paper from a 12 gored denim skirt I love.
Because I wasn't totally exact in my seam allowance I've ended up with a slightly larger than needed waistaband even though I added elastic in the waistband seam.
Might try to correct this in the next version.
Overall I am very happy with this - even the zipper went in easily.
My daughters hate it but my friends don't and since I have come to the conclusion that I shall return to my youthful eccentricity I don't care either way.