A better way to snap your hand-drawn shapes into perfect forms.  
After drawing a line or shape, long hold the canvas to evoke Quick Smart Shapes. Once evoked, the hand-drawn line or the shape will be instantly snapped into a perfect form.   Other possible options of related shapes to your hand-drawn line or shape will also appear at the bottom of the screen in a small window. You can tap on any of these options to change the look of your quick smart shape in the canvas.   Once the quick shape is activated and used in the canvas, you drag your finger or the stylus in a rotating motion to rotate the created shape. To adjust the size of the shape, slide your finger or the stylus in an inclining and declining motion.