here is a site that shows you how to make bows.
http://www.eleganceinbloom.com/hairbow.html
and also I have copied and pasted this from another site. Hope it helps you.
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The first type of bow is called a "tuxedo bow." It is recommended to use 2 1/4" wide ribbons for this bow. Measure one yard of 2 1/4" ribbon. Holding ribbon face up measure about one inch, twist between fingers ½ turn and measure about four inches. Fold ribbon to form a loop, making sure to hold between fingers tightly to secure. Twist ribbon again ½ turn and continue this process in the opposite direction, making a loop on the other side.
Next measure approximately three inches of ribbon to form a loop, twist ½ turn, measure three inches to form a loop on the opposite side. Take a piece of floral wire about five inches long and crisscross across the center of the bow, cinch down tightly. Trim the excess ribbon while leaving about 1/4 inch extending from beyond the wired center in front and back of the tuxedo bow. Cut off the excess wire with wire cutters. With approximately three inches of matching 5/8" ribbon, create a center loop. Hot glue this to the center of the bow and around to the back. Take a large hair barrette and hot glue to the back of the bow.
The next bow is called a "pinwheel bow." It resembles the toy pinwheels that you blow into to make them turn. It is a very attractive bow for medium to ling hair. First measure forty inches of grosgrain ribbon. Use 1 ½" or 2 1/4" ribbons for best results. Hold a four-inch strip of ribbon face up, twist ½ turn and fold over to form a loop. Measure out three inches on the opposite side to repeat the loop process. Continue this sequence until you have completed two loops on both sides of the bow. Measure out four inched of ribbon and cut. Take an 8-10" piece of floral wire and crisscross over the center of the bow, cinching down tightly. Pull one tail of the bow up and the other tail down, cut ribbon ends at a 45-degree angle. Fluff the bow by pulling up on the individual loops. Take four inches of ribbon, folding to a 7/8" wide. Hot glue this to the center of the bow and around to the back of the bow. Hot glue a large hair barrette to the back.
These two bows have many variations. You can add extra loops to make the bows larger and fuller. Or you may wish to cut back on the number of loops in the bows to make them simple but still elegant. You can also try either larger or smaller width ribbon for even more variations.
These bows are again simple and easy for anyone to make. This is however a craft that requires practice. The more you practice your bow making the better the outcome. These are great to make for the little girls in your life or maybe even to take up as a new hobby.