Having a shot list will help you during the blocking process. The shot list is like a map: it gives you a path to your destination but you don’t always have to follow it.
a) let the actors show you what they want to do first, then, when you make a suggestion, it is based on something you have already seen
b) in Television, speed is essential, so try and block some scenes so that your action takes place in one direction (to avoid turning the camera around for reverses)
Peter D. Marshall