...conti-mewed thread...
Duration of sleep is considered, so post early of your cat starts snoring at the beginning and carries on all day.
The main consideration is style, and ridiculousness.
Previous winners invoked moves like
Basket Leg (sleeping with one leg out of a basket) , Shrimping, Face Plant.
You would think that classics like "Otter Paw" "Tight Curl" would be in there, but it seems a post-modern transformation is under way in the cat sleeping world.