Here are some photos explaning how I did the flower on the card I posted yesterday. The punch that I used is the 1-3/4" Scallop Circle (119854).
I punched the flower 4 times, from designer series paper - it is lighter weight than cardstock, so it is easier to scrunch. if you use cardstock, you might want to spritx the punched flowers with a little water, to loosen the fibers of the paper and allow you to more easily scrunch it up.
Now you can crush the flowers in between your fingers. Like I said, paper is easier to scrunch than cardstock. Once you have all four wrinkled up, you can unfold them and flatten them enough that you can find the hole you punched. Put a brad through the hole, lining up the flowers. Fix the brad on the back. Re-scrunch the top flower then the second, then the others, until they are nice and layered.