Use regular scissors to cut the pattern, not your fabric scissors. You are adding the extra space for wiggle room and seam allowance. Keep your lines and curves smooth. You don’t have to make the little bumps for the fingers. Think: basic mitten shape.
The sweater will shrink. Don’t worry, this is fine. Choose a sweater that is at least 80 percent wool; 100 percent would be even better. [5] X Research source
Use embroidery thread in a contrasting color to make a blanket stitch around the bottom hem of your mitten. Keep the stitches loose, or your mitten won’t stretch. Add simple embroidery to the top/front of each mitten. Braid some yarn, then weave it around the wrist of your mitten to make a tie cord. Attach a matching pompom to each end of the cord. Fold the cuff over to shorten it, then sew a wood or plastic button on top.
Great lining choices include: flannel, fleece, and jersey/t-shirt fabric. You can buy it from the fabric store, or reuse old shirts or blankets.
If you are using jersey or t-shirt material, use a small zigzag stitch instead.
Leave a ½-inch (1. 27-centimeter) gap in the hem. Thread a piece of elastic through the gap with a safety pin. Pull the elastic until the hem gathers slightly. Cut the excess elastic, then stitch the ends together. Tuck them into the gap. Sew the gap shut.
Repeat this step for the other mitten and lining piece.