It's easier to use a batten and plaster up to it, then pop the batten off and if you must use a corner trowel, use one then to smooth it. On the other hand you could have put a steel corner edge and plastered over it which save from future damage. You don't need much protection at that height/close to the side wall though. If it's your first plastering job then well done.
It's easier to use a batten and plaster up to it, then pop the batten off and if you must use a corner trowel, use one then to smooth it. On the other hand you could have put a steel corner edge and plastered over it which save from future damage. You don't need much protection at that height/close to the side wall though. If it's your first plastering job then well done.