This is a great activity to capture children's imaginations! This activity can be completed independently, or for younger children you can draw the oil pastel outline and your child can use watercolour paint to reveal your secret picture.

Step 1: Draw the outline
Using white oil pastel on white paper, draw or trace your picture. This is tricky as it's hard to see!
Step 2: Paint with watercolour
Once your picture outline is complete, apply watercolour paint to the paper. The oil pastel will resist the colour of the paint and reveal the picture that you have drawn.
Step 3: Complete the painting
Continue to paint until your full picture is revealed!