I'm working on a little project I've been tinkering with for the past 9 or so years. Its a club-house of sorts for artists so that they can learn and discuss art.
One of the features is called 'Lightbox' where you can draw overtop a picture and follow steps of a tutorial. Another feature would be to help artists find resources related to your niche with 'LinkKit'.
Right now its very old code and I've been working on a much cleaner update during the past year. So, once its ready I'll do the show 'Show HN' thing for feedback.
Here's a taste of the old code.
Lightbox http://artjutsu.com/lightbox/canvas/Default.aspx?q=3