Don't have diagram but beings we are standing on the ground and essentially looking up at some angle, we should be able to see the bottom of the outboard wing. If we cannot, the wings are angled to such as we look up, in other words not level.

The appearance of wings level is different, working back to the word Perception, depending on the different altitude we are flying. The higher up we are, the more visible the outboard wing should be.

If I were 10' tall(I'm not but) and the plane was being flown at 10' high, all I should see is the wing tip, but neither top nor bottom of wing as the wings are level with my eyesight. If the plane was flown at 50' up, and all I saw was the wingtip as before, the inboard wing would be lower than the outboard wing, hence not level because of the angle I would be looking up towards the 50' level.

Hope thismakes sense. Every plane presents differently, and the only way to figure it out is to fly level and do the pull and push exercises mentioned above, to learn what the correct sight is for our individual planes.

Ed