holding still is one of the keys, find a rest to land your arm on and also the advice of staying back about a foot then zooming in works well, hold your button part way down let the camera focus and push the rest of the way once it looks good, also I have found if I am slightly off left or right of the thing when I hit the button it seams to be less sensative to the flash but still light up what I was after in the pic.
