start with fabric twice the depth of small cardboard roll ,and make sure it will go around roll with a little to sew a seam.
sew short sides together.
fold in half ,put carboard roll between 2 fabric sides as shown in pic
run a row of stitches around the top ,pull tight ,and finish off .
cut a circle of cardboard ,same size as cardboard tube ,cut a fabric circle a little bigger,stitch around the circle ,pull tight ,
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sew bottom to fabric covered tube using little stitches.
sew bottom to fabric covered tube using little stitches.