To solve this, it may help to use the "NSEW" and "Above/Below" directional indicators that I showed in the curvilinear and panorama videos. You are jumping ahead to concerns that introduce non-level lines when you don't have non-level lines in there yet. I'll try to explain by answering your questions: When you asked "does that sound about right?" the answer is yes — an up and down view in the same picture require curved lines between the above vp and the below vp. In this frame, you have no VP above. But when you asked "...you should lower and raise the horizon line accordingly too?" the answer is no, or at least hardly. That was for when we limited the viewing-angle. We needed to lower or raise the horizon to swivel the camera up or down — no need for that when our viewing angle stretches to include up and down views. Perhaps it will help to remember that the horizon is not for the lines aiming directly above our heads or below our feet, it's for the lines going directly away from our (level) face. The reason you would "lift or lower the horizon" in this frame might be to, temporarily, figure out inclined and declined planes like stairs and roofs, but that's getting ahead. I'm working on explaining it for our lessons on non-level forms in Part II, but for now, camera lenses and fields of vision are complex enough. We'll keep it simpler by keeping things level. I hope this helps.

Ahhh just recapping some things has maybe made this clearer (sorry I'm a couple of months behind in the assignments!!). So I'm guessing it's a down view? So lines below horizon line (approx middle) go up and lines above go down. And from because we're far away the angle is very wide (nearly horizontal). I THINK