A simple improvement you could make is to just make your camera movements more exciting, watch some videos from sly or hours to get the idea of it. A couple more things; first replay was a bit lacking a couple of lackluster hits was all it was, you should either practice on good replays or make them yourself. Also when picking a song, aim to find one with distinct beats that you can sync events too, that is likely why you found it difficult to really get the 'oomph' out of the sync'd hits.