The best way that I have learnt is to taxi parallel to and as close as possible to the runway edge. You can determine this when the a/c is parked. Get someone to stand outside in line with the gear where you can see them and note where their feet are in relation to the windscreens when you are in your normal seating position. Run this point on the windscreen along the edge of the runway when taxiing slowly and at the appropriate time use differential thrust and full tiller. The idea is to keep the taxiing speed slow enough so as not to scrub the nose wheel and fast enough not to stop. If there are turning nodes then I still run parallel to the non node side and turn into it. It can be quite disconcerting if the nosewheel is some way back as you will be over the grass. This technique works on a 744 so anything smaller would be a lot easier.