Here is how I do my gerber daisy's.
Make a fondant ring
cut out a flower using a punch cutter from CKproducts.com
Lay your cut out flower inside of ring
Cut out another punch flower
Add a drop of water to the center of the flower in step 3 then lay on your second cut out and push the center in slightly
Using a small regular daisy cutter (mine came with a flower kit from wilton) cut out 2 of them. Using a toothpick draw lines in the center of the petal, I just kind of drag it through.
Layer these the same way you did the punch outs.
Roll a ball of MMF, squish it down slightly and dot with the tip of a tooth pick
Air brush your flower and your done!! I let them dry on the ring for about 2 days. You can pre color the fondant so you don't have to air brush them, I just find it is more realistic looking and brighter colors when you do the airbrush.
I hope this helps, not the best tutorial but hopefully will help some!
Very helpful information. Thanks for posting these instructions. Your flowers are stunning, btw.