For this project, I went through my stash and pulled all the light worsted, dk, sport and even a bit of fingering weight. I used a lot of cascade 220 superwash for the base (bright purple, blue-green and light grey), along with superwash merino and alpaca/llama. My background was always made of solid colours, and the texture with variegated or gradients.
project page. I didn't change much otherwise. I tought about making short rows to elevate the back, but it didn't really need it.