I really do use soap bubbles. I mix them with corn syrup to make them stronger and coffee if I want them light blonde, walnut oil for the dark golden color and gesso for white bubbles. I start by blowing bubbles in the direction I want them to land. Once  the bubble area is established I start drawing in the dog then add more bubbles and splashes. I usually get as much on me as I do on the paper. I really appreciate all the positive feedback and request.