Not roly-poly at all
So the plan is: this pale background layer, on top of which will be a complicated floral wallpaper pattern, on top of which will be a layer or two of thin washes to lighten things up and push the color into the background. Then on top of that a lot of big pastel blends for the fish itself, and on top of that a detailed outline of the fish and scales in pure black.
It’s going to take a while. I hope it’s worth it.