what works for me is if as early as possible, and I mean with still say 2500 ft, I ID my landing spot and then the points where I'll turn base and final. I do this exercise quite often, like you in the hope that I'll never need it. When I started doing it, even on a clear farmer's strip, I was sweating every time, and often I'd come in too low or too high. At least with too high you can sideslip, so that's another handy skill to have in the toolbox. If I don't work out early on where I'll make those turns, then I usually don't get it right. I've now done this exercise many times and am feeling a bit more relaxed about it. It's a great thing to practice, practice, practice.
My concern is that if I need this skill in real life, I might identify a landing location and then when it's too late, spot hay bales or a SWER line in the way, both of which can be hard to see. So when I'm flying and looking out for potential landing spots, I try to find places that offer a plan B. Yes, I know it's a lot for the mind to cope with. Yes, above all stay calm, that's really the most important thing.
Don't forget, as soon as you know you are going to make it, get in full flaps: whatever you hit, you want to be going as slowly as possible.