I hear this a lot of time. Many beginners say that they can't draw buildings or scenes because they don't know perspective.
Perspective is a very helpful tool for sketching. But you don't have to use perspective to make a good sketch on location. This video will show you why.
A reader told me that he could draw small objects well but not big objects. So here's a sketching tip for drawing big objects, specifically buildings.
In this video, I go through my thought process when it comes to sketching buildings. The trick is to think about the general shapes first before going into the details.