Step 1: Read the dictionary. Not just for words, but also for the definitions of words.
Step 2: Practice saying "surrealism" and "surreal" in front of the mirror until you get it just right.
Step 3: Wear a beret. Not just any beret, but a beret that says "I'm a serious artiste."
Step 4: Declare that your artwork is "deconstructing the very fabric of reality."
Step 1: Learn to love the phrase "postmodernism" and use it in every sentence.
Step 2: Practice your "detournement" skills by writing a poem about a toaster.
Step 3: Declare that your art is "a critique of the bourgeoisie."
Step 4: Develop a strong sense of irony. Or, you know, just say you do.