Laws of perspective should be carefully studied, practices and used. If you want to draw anything in perspective, you should take into consideration the rules and the guidelines. For example, you have to know where will be the source of light and where will be the horizon. If the horizon is in the middle of the house, the corners should all be connected to the same dot. Furthermore, the house will have wall that are in perspective.
Laws of Perspective in Drawing
At last, see the illustrated explanations below which will make everything easier and much more understandable. Also, you can click the link under the pictures.