This site is not a good design in today's SEO world, there is nothing above the fold on the home page that grabs the visitor, including what you do.
No where does a visitor see what you do, or a phone number to contact you, the page title is useless for seo and tells the customer nothing, there is no description, You haven't done your on page seo, only your slide show tells me anything, and it immediately tells me that you build forum signatures. Your average customer will not know what that even is, but they will know that they do not need one, and move along.
And you are right, the page copy is awful and will cost you customers. You are essentially telling them, "I self taught myself to do this last January and now I want you to turn over your business to me". This is information they do not need and anyway all this type of info is for your about me page. Your home page should be about what benefits your service brings to me, what you do better, faster, or cheaper than the other guy, or the perks you have that other people don't. As a customer, I am interested in what's in it for me. Cost is not as important as making me happy.
People make room in their lives for things they want, even cheapo businessmen will spend money when they want something bad enough.
You have to make them want what you have that bad, and you only have the home page above the fold and 7 seconds to set the hook. If that doesn't do t, that potential customer is gone for good.