Measure the hillside you plan to landscape and plot the dimensions on paper. Then mark where you will build your raised beds, depending on the degree of slope and the general contours of your hillside. Leave walkways between beds to allow easy access to them.
Build wooden or rock border frames for each bed you plan to create. Attach each board to its neighboring board at the corners, using nails or screws. If you need to add height to the downhill edge of a bed to make it sit level on the hill, cut additional boards for the leading edge and then attach them to 2-by-2 inch lumber inside the frame at the corners of the downhill edges.
Move your completed wooden bed frames to their designated places on your hillside. If you prefer to use rocks or concrete blocks, stack them around the edges of your beds on the hill until the planting area is deep enough for the plants you want to grow. Then fill each bed with layers of any type of compost, topsoil, fallen leaves, peat moss, wood ashes and other organic materials.
Fill each bed with layers of any type of compost, topsoil, fallen leaves, peat moss, wood ashes and other organic materials. Water your beds well before you plant them.