I agree with the point on "inexpensive" above--I think you would be better off focusing on value and experience (although as to this latter point, 5 years doesn't seem that long). I think you should strongly consider getting a USRSA certification--otherwise you are just a guy who has been playing a lot less than me who thinks he knows how to string. Likewise, words like "fiddling" are not terribly persuasive to me in seeking a qualified stringer. If I am a college student looking to get my sticks done cheaply, maybe I use you--but if I really care, your site does not compel me to use you--sorry.
Irvin's point about the pictures is dead on--nothing can shut you down quicker and expose you to money damages like copyright infringment as well as using the images of pros without compensation. I would get those images off as soon as possible--seriously.