"Wordpress" won't have killed your site, as such, but the new template and whatnot could have.
Scale back the optimisation of the homepage as it's very heavily "home waxing" orientated at the moment, to the point I actually think it's working against you. Change the footer link anchor text to something other than straight up "Home Waxing". I'd also add a bit more to the main H1 tag (you have multiple on the first page, by the way). "Home Waxing Guide" or something.
You should also either kill these pages or, at the very least, prevent them being indexed. https://www.google.co.uk/search?sour...ir+eyebrows%22
A plugin like Yoast's will help with this: http://yoast.com/wordpress/seo/