love your idea

Don't use direct flash!!!!! If you are using the flash on your camera and not a mounted one, diffuse it the flash with a tissue. You can fold the tissue to diffuse the flash even more, and you can play around with it it. But the direct flash washes out your scenes and creates harsh shadows and highlights

I don't use any flash. There was 2 light sources , it seems from the sandows. The shot is purposely overexposed under hard lighting.

Nice colors, but I'm not sure this is a "stack" or "pile"

Nice shot, Dof's a bit off, great at the back but missed the stones which are the subject.