When I hear a read back from an aircraft in reverse order I suspect they have not written the information down and are doing it from memory. Nothing wrong with that but any part of it can then be easily be forgotten.
For removing the rust I've found this supplement to CAP413 from the CAA really very helpful as it has audio for each phase of a flight, for each type of ATS you may encounter.
http://www.caa.co.uk/docs/33/Aviatio...917_LOCKED.pdf
Hope you find it as useful.