I made these a long time ago, don't remember the paper size but this model utilises the paper quite well. Each finished rose is about 1cm across. I folded one with foil, one with normal Kami. I tried stuffing one in my miniature vial...it obviously didn't fit. oh well, I need to make smaller ones if that's possible. The paper started to tear at the finishing stage!

Here are the older and bigger ones that I made out of flyers, the blue thingy is a humming bird: