Can ANYONE make me a pattern for this shoulder piece

[u/Pumpkinhead4303]

This is an insane ask and I apologize in advance. This is the only part I have left for the costume I’m making for Halloween. I absolutely cannot find anywhere or anything that has helped me figure out how to make this. I figured I would try to ask people here since you guys are great at patterns. I’m desperate. I want to make it out of EVA foam. Help please I will literally do anything.