Use a zigzag or serpentine stitch rather than a straight stitch when sewing on bias tape. These stitches will move with the bias tape, allowing the bottom edge of the tape to be caught in the sewing.
If you wish to line the roll warmer, follow the same instructions, but cut four circles of fabric. Baste two circles together; apply bias tape.
Instead of bias tape, circles can be serged around with a balanced stitch for a very fast and easy hostess gift!