Toothbrush Spray Painting Spraying technique with toothbrush Use pointer finger or thumb to stroke brush. Try it yourself! What we need; 1 4 2 5 3 6 Cut out your favourite shape 1 Lay out shapes on paper. Put watercolour on 2 toothbrush with paintbrush. 3. Do the spraying technique on the shapes. 4. Repeat with colour of your choice. 5. Remove the shapes once you’re done spraying to see result. 3 4 5 Complete!