In this tutorial, we learn how to make a stylish bat sleeve. First, take a large piece of fabric and measure it from your shoulder to the armpit on the other arm. Now, fold the fabric up and mark pins where you want the cuts to be. Now, sew the seams where you placed the pins. Do this for both sides and when you are done you will have bat sleeves on a blouse in just a few short minutes. You can do this on any color of fabric and use different types of fabrics as well. Just make sure to measure correctly to get the best outcome!