Many beadwork designs benefit from being flexible that can make them drape like fabric. Beaded ropes and fringe need to curve and move as part of their design. But sometimes, the flexibility of woven beads is not an asset. It can cause edges to curl or designs to lose their shape.
Circular brick stitch and circular netting, along with Russian leaves are designs that don't always stay flat for me. I've tried several different methods to have them hold their shape, but only one has worked really well for me.