A simple way to impress a client
Send 'em a hand-written 'thank-you' note. I've received several recently. It's very...what... touching, impressive, eye-catching, thoughtful, original; it communicates personal attention; it shows you matter which translates to flattery. And 'vanity thy name is [the human race, all of us]'.
AND, (Andy) if you write legibly it's even more meaningful....
It's the simple things now that impress customers:
hand-written notes of appreciation
prompt responses
accurate quotes
timely and appropriate follow-up
calls answered quickly
emails answered quickly
Anyone can create a flashy website or ad campaign. Customers know that. Where you stand out is making your customer and their needs the most important resource...not your website.