- Fuse double sided iron-on fusible to the wrong side of the fabric. I like a very lightweight fusible.
- Trace your shape on the wrong side. (Remember that the right side will be reversed, or a mirror image!) Cut carefully on the line.
- Fuse shape on the onesie or t-shirt.
- Stitch around the edge to secure. Handstitch a buttonhole stitch, or use a good old zig zag on the sewing machine!