shooting inside can be miserable. especially the lighting. don't be afraid to break the traditional lighting "rules" of photography: shadows aren't always bad
focus is something you have to nail for portraits: never trust the auto focus and always adjust for your model's eyes. open the camera's iris as wide as it can go
always take funny pictures: these are the photos that either bring back the best memories from events, or help to calm down an anxious model during a serious shoot