Tie one end of the rope around yourself using a bowline. leaving a 1-2meter tail. Clip the carabiner in. Pass the sheet end around the tree. Make sure that it is as close to the ground as possible. Italian hitch the sheet end to the carabiner. This will serve as a brake. Descend with caution.

The 1-2 meter tail is for you to tie yourself off with if the descent is more than the length of rope available.

Remember that this is an inherently dangerous maneuver. If there is an alternative take it.

Forward Rappel

This traditional technique is for less than vertical slopes say less than 60 degrees. All that is needed is a line and gloves

Face forward down slope left leg ahead of right.

Rope runs from anchor through left hand with left arm extended up slope behind your body. The line does not turn around your arm as in the arm rappel

Rope crosses front of left leg at top of thigh then passes through crotch and behind right leg just below buttocks and then to right hand with right arm forward of body pointing down slope.

This Australian technique allows you to “bound” down slope. You hop forward, loosening your grip of the line in your hands (BUT NOT LETTING GO), then land with your left leg ahead of the right (THIS IS CRITICAL). The “lock” is the left leg ahead of the right and the grip of the rope in the RIGHT hand as the left foot lands.

If you have extra trousers put them on. If you have none take small hops ;-)

This is a military technique meant to be used to get a number of men down a steepish slope quickly with minimal kit to avoid the delay of down climbing with the added benefit of being able to see where you are going.

I am not sure if it is still being taught and possibly the carabiner rundown has replaced it.