by cutting the sides at an angle to match the hill, the compost bin is set into the hill, and level w the top of the hill.
it is anchored with metal stakes, and pieces of rebar driven into the ground. it is held together with coat hangers.
you can roll a wheelbarrow up to the top / back side of it from the uphill side to fill it easily with yard waste.
the lowest 2 boards in front come off so the oldest stuff at the bottom can be used in a small amount, or just dug out and thrown on top to turn or aerate it. to empty it, the whole front comes off, and it is easy to park a wheelbarrow edge just below it to load w compost.
sorry only 2 pics to show it, but i hope you dont need a step-by-step to build. this just shows the overall design idea, as displayed by my very proud helper.