It just takes lots of practice.

When I was teenager learning to fly RC my instructor would make me cut the engine and wanted me to deadstick so the aircraft rolled to a stop right at my feet.

It wasn't easy but I was a stubborn kid and kept practicing until I could do it every time. Its a very good training exercise because each landing is a learning experience, IE, did you overshoot? Undershoot? Line it up wrong? etc, and each time I got it wrong, I adjusted accordingly the next time. A great way to learn how to manage the energy in your aircraft.

It was invaluable when I later flew slope soarers with only a tiny landing area.

35 years later I still do it at least once each time I fly to avoid getting rusty.

http://www.youtube.com/watch?v=yzeD7CXK6cQ