This is a video I made to show my process. I work in watercolors and do a LOT of layering to get the highlights and shadows. While I was painting I took a photo every few seconds to make a stop-motion-y video. You can see the light change depending on the time of day and the shadow of my head bobbing around. It's a little jerky, because I had an old battery that had to be charged every couple hours. That involved taking the camera off the tripod, removing battery, charging it, and putting it back together in the same spot. Since then I bought a new battery and hopefully if I ever make another video it will stay still and I'll know a little more about lighting. So for now, enjoy!