So.. Despite my sincere excitement for this challenge life just got in the way. I won't be finishing this prop in time bit I will finish it for myself.
A few days ago I happened to stumble upon high res versions of my references and a view from the right side. These really helped with some details on the decorations which I couldn't really see before.
I'm practically done with the sculpt I think, safe from a few details. I gave the snoot a bit more length and added the last of the decorations. I'll add the microdetails in the texturing phase. I also redid the flames for the mouth and eyebrows, as the new references showed more detail and the shape was a bit thinner than I originally had.
In the meantime I've started the low poly which is nearly done so baking and texturing can commence soon. I'm super gutted this won't be finished in time but still excited to finish it soon!