Here is the way that I do it.
Go cylinder by cylinder and set both valves on each cylinder before moving to the next. Watch the exhaust valve and bump the motor over until the exhaust valve JUST begins to open - set the INTAKE valve of that cylinder. Next watch the intake valve you just set and bump the motor over until that intake valve opens all the way and then begins to close - set the EXHAUST valve on that cylinder. Do this for each cylinder and you're done.