It won't really happen by itself. It can sort of be mimicked by changing the layer textures Roughness setting while you're working, then going back into the color with a diluted color (adding water). I've attached a study of the image you provided, done completely using this process in ArtRage. I kept to using the Watercolor tool, as much as I could. So I didn't use the Palette Knife at all (which I normally use often with the Watercolor tool), and only used erase as a tool for drying the wet areas of paint (which helps define color edges). Stencils were used to keep the form of the bubbles.
Nothing is easy to the unwilling.