I am making a baby shower cake and need to know how to form a bow out of gumpaste

I have a bow tutorial here on my blog: http://karencuppycake.blogspot.com/2011/02/how-to-rather-fancy-gum-paste-bow-in-10.html

there are plenty of tutorials online - have a look through them as they show different variations and types of bows
There are also some great tutorials from our very own cc'ers in the "how to" forum