Think "script" when recording
Ironically, the point I have just made is reversible in that one should equally attentively follow the script when recording. I had an interesting problem arise when I recorded a scene meant to be performed in a workshop (hear 4.1.2).Without paying particular attention to this detail, I focussed on the words in the scene, and recorded it. I then tried to post-produce it, and realised how unrealistic it sounded to have actors drilling, hammering and using power tools yet speaking to each other in their normal speaking voices. It was such an obvious mistake that my only choice was to re-record that scene, this time having them shout the words to each other as if trying to compete with the other 'workshop noises' that are surrounding them. This worked much better and is a mistake which in the "real world" would have cost me in time, actor's wages and studio space - none of which I could probably afford.
At other times, I got so carried away in post production that I ignored my script instructions for music bridges or fade ins/outs. This only became obvious towards the end of the project when I was trying to paste the scenes together into episodes, and found that I had ignored the script instructions .