The best that can set you apart is professionalism, and service.
The smart people know you have to pay for it.
Price, Quality, Service----- pick 2
My clients are high end..it is easy to seperate myself from the lazy, incompetant, slow, laid back low ballers.
Even other high end stores have salespeople who do not put forth 115% energy.
Treat each client with the enthusiasm like they are the very first you have dealt with.
Keep your energy up because it will wear off on them.
Keep your skills sharp by helping people all over the world on the internet.
Keep reading the trade mags to keep updated on what is happening in your field.
Have high self esteem...this alone will solve alot of small problems you may encounter.
Treat customers how you would want to be treated.
Learn how to talk to customers in different ways. Kinda like you talk different to your child as you would an adult. People speak different languages even though it's all English.
HAVE FUN!
this is what I do to seperate me from my competition. If you do this, you will find you have NO competition. Unless the client is price shopping, and believe me, you won't want them all.