I just got 'Colors! 3D' :) I always work very hard on my drawings and paintings.
I don't ever trace, but I might use photos or screen shots as references when sketching and drawing. My specialty is drawing birds and dragons and other majestic things that I love to draw :)
I made two paintings during the short time I borrowed my friend's 3DS. I don't have access to the 3DS at the moment, but when I do, I will probably get back into some painting.