Embodiments disclosed herein provide methods and systems for producing wavy shapes, where the lines and/or curves that form the wavy shape are curvy and can appear hand drawn or scribbled. Initially, a shape is separated into one or more individual lines and/or one or more Bezier curves. Each original line is perturbed to produce a wavy line using bounding regions that constrain the amount of waviness produced in the line. Each Bezier curve is transformed into a wavy Bezier curve using bounding regions that constrain the amount of waviness produced in the Bezier curve. Each original line or Bezier curve can be modified to include, for example, one or more curves, one or more loops, a single arc, one or more spikes, and/or regular or irregular waviness.