I want to talk more about construction for landscape painters. Figure painters know that construction is an important aspect of their training. With figure drawing and painting you learn the ideal and then adjust and apply the specific to your understanding. This type of training rarely takes place for landscape painters. Landscape painters tend to copy what they see for good or bad. While this approach can work over time, great landscape painters, like great figure painters, understand their subject on a deeper level. Their method is partly based on observation and partly on construction. It is as much from what they know about something as it is about what they see. This combination of construction and observation helps to strengthen the painting.
Everything has an anatomy to it; understanding this underlying structure helps you paint with a more authoritative approach. Observation alone can fool the viewer into believing they are seeing something they are not. How many times have we been fooled by some foreshortened object in the landscape thinking something looks a certain way when in reality our view of it is giving us false information? If you understand the anatomy of the thing you are looking at there is little chance for confusion since you can visualize what is going on even when its shape is distorted in your view.
A constructive approach can aid the design and the elegance of your depiction too. It can help with an interpretation based only in part on naturalism. Many great painters have used their understanding of the landscape and flora and fauna to create paintings truthful to nature but utterly unique to that artist. This approach requires a thorough knowledge of the subject, the ability to pick out what’s important and strip away what isn’t. For the artist, it creates a completely personal view of the world irrespective of the subject matter.