Whenever I have a new student I do a quickie demo for them, just to show the technique with the big brushes, applying color, being aware of the values, etc. I do try to keep the whole thing within about 1/2 hr -45 min., so they can see how fast it can be, after all thats the name of the class... Here's one I did today for my students. Apples are always a great demo - simple shapes, pretty colors, what could go wrong? (Answer: plenty!) I have to do 4 demos this coming weekend for a large group of seasoned painters... yikes - wish me luck!