When I notice someone is spying on me and taking photos of me

I look at them. Because I don't like them invading my privacy. Then normally I just go back to bed.

This is reserved for times where there is light in my room

When it's bright in my room I do this... the covers hide the light.

Sometimes though, it's more like this

My arm is extended, you know... and my head is at a different angle. This is also how I sleep sometimes.

Usually I sleep like this

That's a pretty decent example.