I sure many of you have come across this technique before. This was a page in my zine for a swap I took part in several years ago using Rose of Sharon pedals. I dug this out because I've been gathering dried pomegranate pedals and will be trying it soon. If you click on the photo you'll get an image that's easier to read.
I like to keep dried flowers in jars. This is a photo of 2 jars one with Naked Ladies dried pedals and one with Pomegranate pedals. This photo is from February 2007.