Along with analysis, interpretation involves drawing meaning from both the parts of the subject and the subject as whole. Your interpretation of something can be seen as your way of understanding its meaning —such as a literary text or a piece of artwork. Interpretation can come from description and help you to establish your position in an argument or persuasion piece.
It is important to thoroughly acquaint yourself with a subject before establishing an interpretation of it. Creating an outline of important details before you decide what they mean gives you a way of following your thought process and supporting any conclusions that you draw about the subject.