A Classic Smiley!
From your loving TTG
This design was featured at Wikipedia and serves as an example and template for work done this school year. The template may be downloaded here. Notice that, unlike designs in the previous year, these designs (hopefully) scale properly since they are all written 'in terms of' the canvas dimensions.
If you download the template and make your own design, study the underlying HTML and JavaScript. If you are crafty, you can plug your own variables into the framework (hint: look for the 'script' in the head of the document and make the necessary adjustments!)