I set about pinning my gathers. I used 8cm per gather and folded it so that the 8cm became 4cm therefore by the time I had finished my skirt is half the length of when I started. I used the same gathering as I did here so click on the link to get the full tutorial. Once you have pinned your pleats run a line of straight stitching to hold them in place and press firmly.
Now I added a bias binding waist band. This can be made as thick or thin as you like - I really liked the little band on this skirt so I went for it.