Tweak WordPress Layout & Typography

My WordPress site is already live on a Namecheap-hosted account, but a handful of design details still need polishing. I have a new page layout mocked up and the font pairings I want—your job is simply to bring them into the existing theme without disturbing content or functionality... (Budget: $25 - $50 CAD, Jobs: CSS, HTML, PHP, Typography, Web Design, WordPress)