-It has been defined as "the way the lens renders out-of-focus points of light". It is the aesthetic quality of the blur produced in the out-of-focus parts of an image produced by a lens. Bokeh is often most visible around small background highlights, such as specular reflections and light sources, which is why it is often associated with such areas. However, bokeh is not limited to highlights; blur occurs in all out-of-focus regions of the image. (wikipedia)
This is my photos that I shoot even though I have no idea to make this but I'm so happy that I do it better and it is fun doing this :)