This is one of my favorite ways to use sashiko stitching.
A few years ago I went through a binge of working with wool. I discovered sashiko thread is the perfect thread for applique with wool because it is so soft it settles into the wool - no floating on the surface. I also discovered that if you have a solid color piece of wool and it seems a little too flat, you can add some energy and texture to it by sashiko stitching it.
And this whimsical kissing fish design was just fun to make.