False. For a timeline to be meaningful it should contain a factual body rather than an artistic touch for the audience to have a more accurate understanding to the said timeline. By being more factual, you are unleashing a deeper meaning to what is originally a beautiful timeline thus by adding an artistic touch, it may add some meaning yet it isn't the secret ingredient of having a timeline that is very meaningful.
what is Line Variation- line variation is the use of a variety of line including width, length, texture, thickness, etc. to add interest to a drawing or painting. Length - lines can be long or short.