"REINVENTING THE TATTOO" Trivia Question #8

Whether your light source is visible in the tattoo or not, it's critical that your light rays all appear to converge on one ____________. 

Answer:  Point  - The easiest way to be sure of this is to choose a point somewhere that will be your light source (this can be inside your composition or at the far end of your drawing table) and then use a ruler to make sure every ray follows through in that direction.  Rays that aim in random directions will look sloppy and unrealistic (The one exception:  Underwater scenes, since water can refract light in unpredictable ways).