My 12-year old daugter and I did the graffiti lesson after doing the street art tour with Graff Tours (same company). Our teacher, Envy, was great at explaining the different techniques to draw letters, different width lines, and blending colors with spray paint. My daugther was complaining at the end that it wasn't long enough, which is always a good sign. And it was fun actually getting a chance to create our own art using the techniquest that Envy showed up. A++.