@sidrq7 do you mean lutino cockatiel? It does not seem to be possible to add a variation like that but if you want I can make you a pattern that looks like it. 😄
I'll be posting a picture soon! However, the one I did was version 1 of this pattern. So, it doesn't have the neat branch in it. I wish I thought of shaping the branch different before I did it. 🤪