This week I have made a couple of fabric storage pots from the legs of old jeans. One pair were black the other standard blue ( slightly harder to sew as they are stretch ones). I tried to find some with the least flare from my box of discarded jeans.
I used an 8 inch section from a leg plus a circle. If you can't cope with working out how big to cut the circle, by measuring across the leg x 2 to get circumference and doing the maths, try putting "circle calculator" into Google and it will work out the maths for you. Do remember to measure the denim tube along the seam allowance not the bottom raw edge and add the same seam allowance to the circle either on the pattern or as you cut it.
Folding the lining fabric and placing the leg section on top, so one side of leg is along the fold, I cut out the lining the same size at the top and bottom but leaving a seam allowance down the side which I marked with a prym trickmarker. This seam was then pinned and stitched.
The base circle of denim and a matching circle cut out of the lining were pinned then machine tacked together. I marked both the circle and the denim end of the tube in 4 equal places along the sewing lines ( not the edges) to help join them together. I pinned then machined along the stitching line twice to make it strong. You may need to tack it first to ensure you don't get pleats or puckers.
Clip the curves then fold the lining down the sides and ladder stitch into place by hand.