UPDATE: Right after I posted this I went back and looked at the picture again and it hit me how to do it. I tried to delete this entire quetion, but it won't let me.
I would like to know how to make the piece of cake/pie in the card linked to below using PCS. I know that the left edge is done with arched steps, but I don't know how to get the rest of the pie --the angled part on the front that extends to the back of the card. I thought about posting this request for the upcoming weekly webinar, but I imagine that it is probably a basic question. Thanks.
Here is the link: http://img10.deviantart.net/9261/i/2009/036/3/6/cake_slice_popup_card_by_lava_tomato.png
ETA: If this would be a good question for the webinar, I will ask it there.