For myself, I tend to get angry when someone copies me. Even though, many will say that it is flattering- I disagree. Be unique rather than stealing someone's look or art. For example, if I spent time on a difficult project and someone copies me, it would infuriate me; what if that person gets the credit first and disregards my originality? It is important to express yourself in your own unique manner- that is where greatness can happen.