Ensuring the sound was recording properly was the major issue we found when we went to edit the piece; there is noticeable crackling on the audio track, something we could not fix. In the future this would be fixed by double checking the sound recordist is happy with the audio before filming.
The only other thing that could have been improved was more extensive planning beforehand to improve on the edit which we did not have as strong a plan for.
Apart from that I feel the shoot for the piece worked out well: communication between director, actor and crew was good, each shot was filmed efficiently thanks to planning beforehand, and we all worked together quickly within the hour limit to film.