Wrap a square/rectangular sheet of foam in the matirial you need, glue it togeter from the back like wrapping a present.
Then fold it like a fan in the center to make it look gathered like a real bow.
Then while keeping the fan folds pinched together, wrap a strip of cloth around the center of your bow to hold it in place.This part is supposed to look like the center knot part of a regular bow.
The foam keeps the bow from drooping! I hope that's what your asking about! Is it like a sailor scout bow or something?
heres what mine looked like...