These are die cuts, cut from hand watercoloured paper, have been placed together on a semi-sticky tape (or sheet) and then die cut with large shape. Simple shapes seem to work best, and I found that they can also be cut from a template if you don't have suitably sized die. The heart-shaped one was cut from a paper template made by drawing around a coaster.
The die cut pieces are raised up on sticky pads to give greater dimension.
I'm learning to do so many new things in this class and highly recommend it.
The dies used here are:
Leaf Card
Sizzix Movers and Shapers Mini Tattered Leaves [Sizzix UK]
Sizzix Bigz Die - Leaves [Sizzix UK]
Flower Card
Sizzix Bigz Die Flowers and Leaves by Rachel Bright [Sizzix UK]
Sizzix Bigz Die - Leaves [Sizzix UK]
Heartfelt Creations Post Patch die [Icon UK]