I had this old pair of jeans that I was quite attached to, but they just didn't fit me that well anymore. I really loved the waist line and the details on the left side. I couldn't just throw them away, so I decided to turn them into a skirt. below are the steps I followed.
what I did first was to undo the seam on the inside of the legs.
then I cut the fabric at knee length and sew the front parts together.
then I sew the back and added some of the cut out material in the middle.
I did the hem and... voilà