Here's how to create the brush...
For each brush, you need 2 sponges, an elastic, and a popsicle stick.
Cut each sponge into 3 equal pieces.
Gather the sponge pieces and place an elastic around the centre - wrapping several times.
It will look like this :).
Add a popsicle stick and twist it into the elastic to secure the handle for your brush.
Once it's secure, position the popsicle stick in the centre.
Have fun painting!