You first need to pick the right area of your yard
After planning out your sloped rock garden ideas, pick a hillside area of your yard. A flat surface just won’t do, since you need the downward slope. If you have planned to use some heavier rocks or are thinking about a bigger, more complex project, make sure you have friends or family to help you out.
Then, gather the materials you want. Obviously, plenty of aesthetically-pleasing stones will be needed. Also, you may want to consider some larger boulders, plants, small trees, or even large rock chunks. And during the process, make sure you pick smooth stones that are safe and not jagged.
Also, coordinate colors of plants that go well with the decor of your yard. It is good to even sit and write down your sloped rock garden ideas beforehand, so you can plan what materials you need for the look you’re trying to achieve.