Here's a free pattern:
http://www.quilterscache.com/D/DresdenPlateBlock.html
I use the pattern from Egg Money Quilts and I also bought their acrylic template.
I also don't cutout the back after appliqueing it down. I feel it gives it more stability since it has all those seams in the petals.
I think the only ones who need to cut out the backs are the ones who are hand quilting.