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To bring a child's drawing to life, pin the cut-out drawing, facedown, to two pieces of fabric. Trace with a fabric pencil, leaving about 1/4 inch all around. Cut out. Sew on button eyes. Pin fabric again, right sides facing. Sew together, leaving an opening for batting. Stuff with batting, and then sew closed. Sew on other features, such as ears, limbs, and embellishments.

See the instructions at  -  http://www.marthastewart.com/article/material-world?backto=true&backtourl=/photogallery/sewing-projects-for-kids#slide_1