Bokeh Glow increases the likelihood of those circles of color/distortions appearing in pictures. Keep in mind that a source of light is usually require for them to appear, or something brighter out of focus, such as flowers.
Keywords that can help it along:
bokeh
airbrush painting
points of light
In particular, I've found that "airbrush painting" can help when using media such as colored pencils, which otherwise tend to obscure the result.