I have made rag rugs on and off from about 15 years. Use a large crochet hook. you can do ovals, hearts and the like by adding and subtracting stitches. You do not have to sew the pieces together. Place fabrics together at the ends and clip a little hole through them. Then hold one piece in your right hand, put fabric in the left hand on top of the little hole matching holes. Then you simply take the left side and poke it through the hole pulling it all the way through until you create a knot. It will crochet easily.