Install two sconces and one switch

I want to install two sconces in my upstairs media room and add a on/off switch to control them.

I can get power from one of the two outlets on the same wall that I want to mount the sconces.

I have access behind this wall - it is a crawl space and is tight but I can get in there. The main thing I want to know is how to hook up the wiring.

I want the outlet that I get power from to always be hot - not switched like the sconces.

Thanks