When you want to switch a plane to another runway, make sure to always give them a new pattern entry instruction for that runway. When I requested a change to runway 14, you cleared me for the option right away without giving a pattern entry instruction, so I had no idea whether to fly a left or right traffic pattern
Before sending the ‘exit runway when able’, wait before the plane is on the runway and slowed down a bit. I was still in the air when you sent it to me, what if I would have gone around? :P
Before approving pushback, make sure the plane requesting it is actually capable of pushing back (My TBM wasn’t) and that the aircraft is in a position where pushback is needed.