I think everyone said what I wanted to say, particularly UniversalHeat but I have one suggestion for improvement for your next work: I think you should try different angles and/or more shots and maybe some zooms as well. For example, during the conversation about the World's End, you should do a shot that is slightly above them (2:25-ish according toe vid). I have a feeling that you were just under a budget and time schedule though but if you do get the chance, please do try to different angles. It'll make a scene visually much more interesting.
Hope it helps!