yeh, ceiling + wall angles/corners..
i always get some on the toe and run down the ceiling line left - right all the way,vertical trowel, then start the left hand corner to the floor vertical trowel and run it up horizontally...
then its just left to right 3/4, then fill the bottom in..
must just be me, you cant really tell when its done its only very slight but i know its there...
could just be that cos of the squareness and the fact im trying to keep away from the ceiling i just done, and theyre difficult to clean out, i just end up mashin it in and trowelin it up rather than hook off any excess with the trowel first...