What a fun challenge today! I've done this with a scrapped page using Anna Griffin papers - I love it and am so excited that you choose this today.
My first pleat is 1-1/2" wide and folded every inch and the top pleat is 3/4" folded every 3/4". The CTMH ribbon was given a few shots with the heat gun to get an antique look to it. There is an overlay of vellum on the large oval.
There is a close-up shot of the pleats on my blog and some other blah, blah, blahs!!
This is a fun challenge I'm sure I'll use it again!