Making Baby Blankets To Sell . Fleece blankets are generally 100% polyester. In this tutorial, you will learn how to make a baby blanket that is soft and. I decided to start my baby sewing with some simple flannel receiving from www.pinterest.com She started out using yarn she already had on hand. You can print any design you like all over one side of your baby blanket. Choosing fabrics for baby blankets is a project that is almost always going to be a lot of fun.