Well since you insist…
I terraced my front yard by building new rock walls; 2 parallel walls about 6 feet apart. The “someday I’ll irrigate once the drought is over” tubes are kind of ruining the photos though
All together it’s about eight tons of rocks. Turns out you can move an enormous amount of rock if you do it one at a time and there’s no deadline.
That is an excellent back yard. I especially like the string lights and the raised planter bed. What are you going to grow?