Have Notan book, unread for years. Liked results with half square triangles, then curved the edges and tried repetition of cuts. Leaves!
Gave papers a colour wash and sponged inks.
Glued two pieces of paper together so I would get a subtly different effect in the two "sides". Left some white on reverse. One leaf is rotated on one side instead of reversed. Not sure if this is going off piste!