take the a look at the three countersteering pics posted in the "post your pics" link in my signature.
to go right you look right, push right and then straighten the bars. the tire will quickly point left but will "fall into" the turn. The amount of initial pressure on the bar will determin how fast it gets into that turn, the amount of consistant pressure will determine how long it stays there.
when doing low speed countersteering many people think they have to try and keep that pushing arm straight out from their original body position, but it's more like pushing yourself back onto the side of your seat.
countersteering becomes so natural to people who do it well, that it is very difficult to describe to someone else, kind of like "how do you stand without falling over?" "i don't know i just do it"