This document discusses using posters to sell products. Posters are meant to catch viewers' attention with eye-catching designs that provide necessary information. Examples are given of product posters made by famous artists like Toulouse-Lautrec, Mucha, and Beardsley that demonstrate principles of art like dominance, symmetrical balance, and asymmetrical balance. The goal is to design posters that market products effectively through attention-grabbing visuals and strategic use of space, color, and layout.