Turn wheels into curb.
Engine off.
Pull parking brake only as much as needed.
Release brake pedal.
Trans in Reverse. (reverse is not synchronized so you have to be mindful of engagement)
Had my prior car for nearly two decades, so you can imagine that I've had a range of experiences. By the time I sold it a couple of years ago, the parking brake was completely useless. The teeth on the automatic adjusters were completely worn/stripped.
We live in a valley. So if you're not on a downhill, it's only because you're on an uphill. That's the first thing we notice when travelling, is how FLAT the land is. I also found out that cycling is relatively boring on flat land LoL.
For really steep grades, engine compression alone would not hold it. Most of the time I'd find some place else to park. Also kept a wheel chock in the car though I was always afraid somebody would come along and yank it, for their own entertainment.
Anyway, I always set my brake and put in gear. One day I happened to be sitting in it still, after having parked. Heard and felt a loud quick slam with some dull metal ring. That was my parking brake lever slamming into full release. I believe I had unwittingly set the lever on the edge of a "gear" tooth, which eventually resulted with a slip. That only happened once in two decades. Though, there have been a couple of times I've come out and found it in the release position. Probably just forgot to set it but it could've snapped loose again.
Rotating my tires, I had lifted the rear but forgot to loosen the lug nuts first. No problem right? Just pull the e-brake. So I did. The passenger side worked. The driver side wheel rolled as if I never pulled the lever. So my e-brake (due to rust-frozen adjuster) was only half as effective.