Attached photo shows an alcove in a bedroom where a built-in wardrobe used to be. I've decided not put in another wardrobe and create an home office workspace with shelving and worktop. So I've put in the insulation between the studs and now I'm about to fix new plasterboard. Should I tape the joins and then cover these with jointing compound or could I just use caulk on the joins and then paint? I've looked at videos on YouTube and using jointing compound for the first time looks like it could be very difficult.