This is such an easy technique and add that extra little touch to your flowers instantly. Just use a toothbrush with some acrylic paints or water colours. Apply some acrylic paints to your toothbrush and gentle use your fingers or another medium such as ruler or twizzer and scrape the top section of the toothbrush. Make sure your toothbrush is facing the flower. With a more watery consistent in the paint, you will get bigger splatters. Try this technique in your next project with flowers.