I started straight shaving a few months ago and just recently regrew my beard. I've lately been trying to keep it thinner. It takes some learning! Sometimes your blade will block your view and you'll have to figure out new grips, but I've found the hardest part is dealing with the skin stretching. Quite simply put, you'll have to frequently stop and let go in order to see how far you are really trimming the beard. Since you're following a line established by your barber though, it shouldn't be too hard.