Assuming you want to make a baby doll towel:
You will need:
-1/4 yard terry cloth or similar fabric (you can use an old hand towel)
-sewing machine and thread
-scissors
-a baby doll about 15 long
First, cut a rectangle of fabric that is twice the width of your baby doll and about 18 long. Fold the fabric in half lengthwise with wrong sides together and press. Sew along the long edge with a 1/2 seam allowance, then turn the tube right side out and press again. Next, fold one end of the tube over about 1 to form a cuff and sew it in place. Now, slide your baby doll inside the tube so that her head pops out of the top opening. Fold the raw edge of the remaining open end down about 1/2, then sew it closed. You've now got a cute little hooded towel for your baby doll!