The most sophisticated the airplane, the better you have to understand this kind of things. And as someone pointed out, every once in a while you will enjoy an above GS capture.
In the 320, for instance, it is most important to know the drill, however it is not very detailed. After many above GS captures, a few of which were untidy or worse, this is what I do as soon as I realise it will be above GS capture:
1st: speed managed (otherwise, in case you are coming at a high selected speed in OP DES, upon V/S selection thrust would suddenly increase)
2nd: ALT sel knob, above actual altitude (to prevent ALT* and to activate V/S if you were in OP DES)
3rd: set V/S -1,500 fpm
4th: attain landing configuration without delay
5th: confirm there is a valid G/S magenta signal (I once was diving to no G/S! luckily we realized what was going on soon)
6th: don't forget to set GA altitude when it is already above you
7th: don't forget to switch to tower, nor checklist, nor to obtain landing clearance