Perspective in art is what gives your work a 3D look rather than a flat painting or drawing. It sounds complicated and boring but it is actually quite simple and is probably something you already understand but just haven’t applied it to your work.

Understanding perspective in art makes your work look real and in proportion. Learning how to use perspective to add distance will give depth to your painting or drawing and make it so much more interesting and realistic.

--Tremblingart.com