I'd recommend reading the past reviews on here, and applying what you read to your site. You'll want to pay attention to those that pertain to basic on-page SEO principals, adding contact/service area information to your header/footer, etc.
Sinking Valley is probably going to prove to be a bit broad for search, so if you have specific service areas of Tyrone, Altoona, Huntingdon, State College, wherever, you'll want to work that in to your tagging and content.
I know lawn & landscape marketing, branding, and web strategy. I'm not anonymous, I just don't self-promote.