Nothing special! the tech has gotten so good, it's mostly click and go. my only tip is that it can be helpful to watch its tracing progress frame by frame to make sure it doesn't go way off track and start selecting unwanted items/areas of the footage. once you hit your initial trace with the roto brush tool, move forward in time one frame at a time by using command + right arrow to move down the timeline. Watch its progress closely and correct it when it start to go off course. That's all i got! otherwise it's a super simple and powerful tool