First you are going to need fabric try to use a jersey knit, something that has spandex and is stretchy. What I basically did was i already had a vintage bodycon skirt from the 80's and I used it as my pattern. I turned it inside out pinned it to the fabric. Then I cut the pieces and started sewing
*NOTE: the skirt doesn't have a hem, what I did is that I folded the fabric and placed the hem of the pattern on the fold. so the skirt has basically two layers, you can do this if your fabric is light weight or sheer.
Here's the skirt is inside out, you can see that their is no hem.
I started by sewing the sides seams with a 1/2" seam allowance following by a zig zag stitch to clean up the edges. I sewed the waistband last.
.........and here is the finished product on. Hope you enjoyed it