What makes you and your company different from the rest? Why should I being a potential client come to you for service instead of the other guy? Everyone has an edge (or at least you hope you do) or an upperhand...what is yours?
Stop guess-timating. Learn how to estimate and make money! $$$
i always try and go the extra mile for the customer to make em happy... if i get a call because a customer had a problem with somethin i will fix it... most cheap fly by night companies wont do that...