by Nicholas Kniel The Secrets of Fashioning Ribbon Flowers: Heirlooms for the Next Generation
by Helen Gibb
Both of these have articles about girdles....but if you're looking for an exacting step-by-step with loads of pix, then, I don't think any of these books will work for you. Best bet would be to check them out at the local library or bookstore and see if they contain enough info for you to make one....
I would also Google for girdles and check out some historical sites....and some...whatever you call them....where you dress up like in Robin Hood days? Medieval?? ....some kind of Festival....maybe someone will know what I'm talking about..