great idea for corsages!
One way to make ribbon roses that works really well with wired ribbon is to make those slinky things--damn, I'm not sure how to describe them. We used to make them out of straw wrappers.
Let me try though. Take a piece of ribbon, and at the center point, fold one end up to make a 90 degree angle. The ribbon should look like a big L--call the top leg of the L end A, and the lower leg end B. Fold end B over to the left, making a backwards L. Fold end A down, B over to the right, A up, B left, A down, etc etc. until you've got a little stack of folded ribbon.
Holding both A and B ends close to the last fold, pull on one of them, scrunching the ribbon into a flower. Wire-edged ribbon will hold itself for a little bit, but just secure the ends underneath with a little glue or a couple of stitches.
Jeez, I hope that made sense!