if you can't draw too well yourself, you have no business taking potshots:)
So people can only cricise things that they themselves excel in? That's faulty logic, my friend. If your reasoning was accepted then very few judges or juries would be entitled to reach verdicts in court cases, I couldn't criticise people for using hard drugs unless I was myself a hard drug user, and I couldn't express a negative opinion of a neurosurgeon who repeatedly botches his work and kills his patients because I know nothing about surgery or neuroscience.