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Grab a blanket or square-shaped piece of fabric of suitable size. Optionally, add flair!
Ponchos can be nearly any size - they can range from waist-length or higher to floor-length. However, most ponchos should hang down to about wrist-level when your hands are at your sides (and slightly lower on the front and back of your body). To determine if a given piece of fabric is the right size for use as a poncho, drape the blanket or fabric over your head - it will hang about a head-length above where it will as a finished poncho. Most adults will need a piece of fabric about the dimensions of a normal couch throw, while children will obviously need smaller pieces of fabric. Err on the side of using too much fabric, rather than too little. It's easier to trim a poncho to make it shorter than to sew extra fabric on to make it longer. When it comes to making your poncho more functional or eye-catching, you have a variety of options! Just a few are listed below:.  Add pockets. Sew small, flat pieces of fabric to the front or sides of your poncho, leaving the top edge open so that you can stick your hands in. These pieces of fabric can be any shape you like - try squares, half-circles, and hearts! Add a pattern to the edges. Try cutting a repeating pattern along the edge of the poncho for a killer "wild west" look! You have many choices here - for instance, a simple zig-zag may suit your purposes, or you may want to create a fringe by cutting thin strips into the edges.