While nursing my daughter, I was thinking some more about your website. 😀 It really is a great site.
With the quotation mark, it may just be the font size and the font used that make it so it isn’t easily identifiable. On a different spot on your site, you have a quotation mark in a bubble, and that one is identifiable; it is much smaller, so maybe that is why.
Then with your services, you may consider listing the genres you specialize in the top section where you have the kinds of things that can be edited. You can opt to put an asterisk next to your specialities, then explain you specialize in them, like how I have it here.
Then I know I suggested putting why you specialize in those genres in your bio, but some potential clients won’t look at the bio area, so you can include a line or two showcasing your credentials in those genres on the service page in the top section of material you edit.
Since it seems you have different clientele (authors and business professionals) for your editing services, you may want different pages for each so you can address their specific pain points and speak more directly to them. You have your content writing for business professionals on a different page, but currently, the editing is all on one page, which is fine. It’s just a matter of speaking more directly to the specific client.