New Potential Client's Wishes

Moving on :-) Below are the areas that the client would like painted. First in the foyer, way up at the top (2 storeys tall) he'd like me to create a ledge that would in effect end the wall and then open up to an exterior view.
Then that would continue on to a sky ceiling.
Then in the master bath, he'd also like a sky ceiling.
I'll start working on ideas/sketches for this today.