How to seal tiny flowers

Hello!
I have been trying to seal tiny flowers for resin casting and am using the Castin Craft spray. My problem is that even when I lay them on waxed paper after they dry and I try to pick them up they rip because they are “glued” down. I buy the flowers and they come without stems and are tiny so I can’t figure out how I could hold them and spray them that way. Any ideas on a good way? Thanks!