Your drawings lack shape and come off as very flat. Think in 3D when drawing. For instance, the wax that holds shut the letter casts no shadows on the letter itself, giving the whole painting a flat appearance. Push up the contrasts more. Work with darker brushes, don't be afraid of them.
Saidin: Fyi the vanishing points of objects aren't always the exact same unless you are doing an orthographic projection, or they are all in the same plane and at the same orientation. So the vanishing points of the road and the chair should generally line up, but everything else is pretty well on its own. Indian Boy:…