This is my project. The pieces are a little overlapped. The "binding" is a lot of little strips stuck together on a piece of parchment paper then cut down into the "binding." Everything is fused. The bigger shapes are stitched with straight stiching on the edges. And I did FMQ around the flower petals. There's stippling with varigated thread over the strippy sections.
If you do this, be sure to use parchment (or release paper) on the top too when you iron everything.
sorry it's not a better picture