At a guess I would say 8,10,12,14.... the top tier looks too big to me a 6 and I can't imagine a 10 being the smallest. Don't take that as gospel though!
It's from Graceful Cake Creations.
This looks like a life-size picture, judging by the rose petals.
You could measure it to see.
This is her Flickr page.
does anyone know what mold was used to make these scrolls.....i remember seeing it a while back but forgot....thanks so much!
The scrolls look like freehand piping to me.
As for the draping... I like to make sure the rectangle to use the drape is wide enough so i have plenty of fondant to gather. Also, I like to roll it around 1/16"-1/8" thick depending on the length of the drape. I tend to adjust it sometimes to how long the drape has to go from one point to another. I find if I roll it too thin, the pleats don't have enough body and sag too much. Too thick and it doesn't drape gracefully. I dunno if this makes sense.