Came across this interesting technique of painting water color over crayons, and gave it try with my kid.
I first drew a girl with umbrella and made my kid color it in with crayons. Added rain drops and puddles with white crayons. Then painted it all over with different shades of blue water color. The rain drops and puddle (white crayons) beautifully popped out once the water color dried up. As a final touch, we pasted the sticker of puppies.
Here’s another resist painting we tried. A very amateurish take on Van Gogh’s starry night.