I have taken a look at your web site and the template that you want it to be changed to. That looks very straight-forward. I have a lot of experience at writing HTML and CSS, but not (so far) with PHP, but it looks like that will not be involved.
Even though you are not offering very much money, I am willing to work with you until you are happy with the result, because I am just getting into web development and frankly, I need experience of successes that I can point to for future contracts. So I'm willing to give you more than your money's worth.