Start to turn the tuning peg counter clockwise, keeping the half inch piece of string on top of the string which is being wound around the tuning peg.

This will stop the string from jumping over the tuner, making a tighter string.

Make sure that the string is laying on top of the tuner as seen in the picture.

Make sure that the string is still resting in both of the bridge notches (steps 5 & 6) as you tighten it.