Draw There are a few basic tips to know that will help you with drawing mouths. I probably learned these tips around high school when a friend of mine was drawing a portrait for art class. There are just basic guidelines to follow when drawing the lips and teeth, and if you've attempted to draw a beautiful smile but the end result looked like a bunch of chicklets, then these rules are definitely for you as they were for my friend. Step 1: Keep It Simple! When drawing the mouth you should keep it even simpler than when drawing the.