I love using perspective, even though it takes bloody ages, it can be really satisfyng building up a scene. I remember reading in a book on it ages ago that with two-point perspective neither of the points should be in the scene. Like some rules this will just stick in my brain and I'll always work to it. Anyway on my latest job I've been mucking about with the angles to jazz it up a bit and have started putting one of the points in the panel!!!
I've noticed you can get away with it if the points are far enough away and the point that's in panel is close to one of the edges., otherwise you start to get nasty distortion.
If anyone is still awake.....