That depends.
Before I teach anyone graphics I ask them a question and they must supply a acceptable answer.
Q: What is your philosophy on life?
Live life to the fullest and never back down from a challenge.
Hmm..
I'll accept it.
Lesson 1- COLOR:
In any form of art, color is a key element in your composition. With colors that compliment each other you will have a nice, smooth transition between colors and it will be very calming on the viewer and make it more enjoyable. You do not want to choose colors that look bad together or do not compliment each other. This will cause the viewer of your piece to get angry and generally disapprove of the piece.
Example of what is OK: Brown and light blue
what is not OK: Red and purple.