Re-shooting and editing my main film

We decided to re-shoot our main film and this time we did it indors as working outdoors we felt we would not reach our full potential, the shoot went smoothly but when we got into the edditing suit we realised that we had positioned the camera in the wrongly therefore when we put the whole film together the actors werent looking at eachother when they were talking to eachother but lukily we found a way to flip the screne round to correct this error