Any other sleeper tips to tricks?
As a fairly regular user of the sleeper here are my tips
1) When booking try to get a berth between 5 and 17 - that ensures you are not over a wheel, which if it has a flat, will disturb your sleep.
2) If you can afford it, and have the time, get a return from Reading to Paddington. You can board the train from 22:30 and get your head down before the train leaves at 23:45 - worth paying the extra for up to two hours more sleep. Your existing ticket, if you have already bought one, will be valid as the train calls at Reading. You can also use the 1st Class Lounge at Paddington and the lounge car on the train once you board.
3) First thing to check in your berth is the heating control by the light switches. Push it round to cold - sometimes it is left in the mid position and the cabin soon heats up.