A cute Spring project Grade 2 students did a while back. They drew a little boy or girl standing in a rain puddle holding an umbrella. They made 'dashes' in the sky using water-based markers. We sprayed them with a water bottle and the markers dissolved slightly to give a wet, hazy effect to the sky. I was inspired by this project by Whitney Elementary School on Artsonia.
Start off by drawing your picture in pencil. Outline with a permanent black marker.
Color in the whole picture, except for the sky, with colored pencils.
Using water-based markers (we used Crayola), draw small dashes all over the sky.
Kids can mix colors; whatever they want. Random note: after I showed kids my example, I had to reeeaaally emphasize that you never go outside during a lightning storm! hahahaha My picture actually looks a bit dangerous- but the boys, especially, loved the lightning bolts! lol
Once the sky is done, use a spray bottle filled with water and spray the entire picture. I encouraged students to use lots of marker in the sky- it makes for a more vibrant picture in the end. We talked about why the marker 'bleeds' (they think this term is so weird!) and why the colored pencil parts stays the same.