I thank you for your advice in fitting new plasterboard ceiling panels but was wondering if there is a knack to doing this on your own , since even the smaller panels are weighty.
Build a dead mans prop, have working platform you can step up on to so you can handle the board and you can rest the board on your head, have the props at distance you reach and pull them in tight trapping board to joists.
Google "wiki.diyfaq.org.uk/index.php?title=Dead_man_prop"