Here is another negative painting I finished last weekend in watercolors. This was actually the first one I did. I wanted to keep it very simple and mostly monochromatic.
This one has mostly green watercolors, but a bit of yellow too. You could do this type of negative painting with almost any shape, but simple shapes like this are a great place to start if you've not done negative painting before. Next time, I think I'll do something a little more detailed, but I do like how this one turned out.