Take the time to decide on how you would like to furnish your bedroom.  Once you have decided which direction you’d like to sleep in (facing which side? facing the window or the door?), the rest of the bedroom can be arranged more easily. Once this has been established, you’ll know where you want to put your bedside tables and therefore where the wall sockets must be positioned, and how high. You will probably also know where you would like to put your TV and therefore where the TV connection point should be positioned.