Dampening the leaves

Yes, dampening the leaves to shape and letting them dry does help them to keep the shape.  It is remarkable just how much shape you can get.  When making petunias (using just a hole punch) let the circles get damp and then place them onto one or two layers of craft foam and gently and slowly shape with a stylus.  Push in the center and also using another stylus pull the edges out.  You will be amazed at the trumpet shape you can get.  You can't do this with dry paper.  Damp shaping is fun and makes a big difference in the finished flower.  Have some fun!  Kris