I did this drawing a year or so ago for the cover for Cry of the Snow Leopard, and I wanted to check out how well I did with the perspective. This is a dramatic scene where Prof. Brewster is being attacked by wild dogs and is saved by the appearance of a snow leopard.
The red line at the top is what I think the horizon line is. My intention was to have the viewer looking down on Brewster and the dogs, and also down on the snow leopard.
I've drawn in the lines, and I clearly messed up in several places, although I did a few of them correctly. I'm not sure about the line I drew on the SL's ears.