with the vanishing point..it can be placed anywhere on the horizon line....IF you draw the horizon line lower on the paper..it will give you the perspective that your looking down on it....if you place the horizon line towards the top of the paper...it will give you the perspective of looking up at something...Then depending if you want the vanishing point. in the center, or left or right. Its really up to you where its placed
heres some tutorials for 1 point perspective. Learn and understand 1pt then move onto 2pt then 3pt ....heres a 1pt demo of doing an interior..[link] a 2pt one for exteriors...[link]
Zero-point perspective Because vanishing points exist only when parallel lines are present in the scene, a perspective with no vanishing points ("zero-point" perspective) occurs if the viewer is observing a non-rectilinear scene. The most common example of a nonlinear scene is a natural scene (e.g., a mountain range) which frequently does not contain any parallel lines. A perspective without vanishing points can still create a sense of depth, as is clearly apparent in a photograph of a mountain range (more distant mountains have smaller-scale features).
You can use all three perspective views in environments.