Brush up an origami skull

I read my old posts.And I folded this skull two years ago.
Whoops how crumpled!

I tried again just now.

Uh...satisfaction.My level is better than two years ago.I glad!

--- Skull ---

The difficulty	:	****
Time to fold	:	50minutes
Paper info	:	20cm * 20cm (Not cut anywhere)
Reference book	:	Tanteidan Convention Book 16