Jinkster,
Go easy on Keith, he's only trying to help you out! Try not to get so upset over such a minor comment. This industry requires that you develop a thick skin and a positive attitude to constructive criticism because you'll get lots of it and you can't afford to get upset. Just call it character building!
Hopefully Keith will help you next time if you ask nicely!!
Anyhow, keep up the good work and I hope you get there in the end!