With a pupil trained through a pentaprism, aimed at a scene, I ask myself: "Does this feel right?". Check.
I know this won't last, so, given what's happening, am I in the right spot? Not much time-- check.
Is this the aperture/shutter combo I need? Focus range right? Check. Check.
I love those beams shooting around either side of that tree-- that needs to divide the frame in half. Check.
Ok, edges of frame-- tree has space above & ample below, the sunlight along the ground has a little shadow in front, nice.
Is my horizon level? Check.
Is my white balance right? Check.
Is my ISO appropriate? Check.
Click. Good. But I want just a titch more detail in those shadows-- ok, click, perfect.
Gone. The light was gone.
The checklist isn't much different every time, no matter the subject.
Practice practice practice. It has to happen in a moment. Practice some more.