Have Pride in What You Do
This shouldn't be something that's out of the ordinary, this is how good businesses are run and how they've always ran. I'm a firm believer that if you have pride in your own work and a passion for providing REAL quality that your potential client's will see and appreciate that. It's definitely step #1 in getting that job over the next guy.
UPDATED, I might be wrong..."Accused! - Jon Engle"
As you'll see in the comment below, I just might have been a little too hasty in pointing this story out to everyone. My normal skeptic mind has failed me on this one and I apologize. I have left my original post below unedited so everyone can see my folly. You can read my reason for posting this update here:
Long-Term Value of Digital | A photographers concern
Famous artists of the past produced physical, tangible works that could be bought, sold, traded, and displayed. These works were produced by hand and have great value. Looking at an 11x8 Ansel Adam's original print valued at $15,000 one can't help but think...is this digital world devaluing art?