I don't know where you could get a pattern but I could tell you exactly how I made the one I just did a *sew and show* for. I wear a 22/24 and am 5'10" tall.
I got 9 different fabrics
1/3yd of 8
2/3yd of my favorite one
I cut them all into 4" strips. I did cheat and go across the width of the fabric...didn't seem to cause any problems. Although I prewashed and dried everything first.
I had 2 leftover strips. I could've gotten away with using one less strip and only having 1/3 yd of 9 fabrics....a total of 3 yds.
I could've also gotten away with less if I had a serger. I did french seams....sewed everything together wrong sides together first with a slightly more than 1/4" seam (to the edge of the presser foot), trimmed the seam allowance, ironed, then folded each seam right sides together and enclosed the seam allowance with another presser foot wide seam. So, if I had a serger I could have shaved off another 1/3-1/2yd. by just making one 1/4" seam.
I joined everything with the seams on the outside, then enclosed all the seams. I didn't join the first and last strip until all the others were completelt done
Then I folded down and sewed the elastic casing. Before inserting the elastic I figured out how long I wanted it and used my kitchen tile as a guide for trimming the bottom. Probably a little unorthodox but my scissors just ride the grout line.
Then insert the elastic and either hem the bottom or trim with lace.
I used the bottom of a skirt I like the fullness of as a guide for the width.
I pieced about 26 strips together, started getting worried it would be too full, enclosed those seams and saw how much it shrunk...then I added a few more strips to get it close to my control skirt.
I had a lot of fun making mine.
