You need it to have the right kind of written copy and there can be no typos. You must clean up anything like that. It will signal to people that you do sloppy work and can't be entrusted with anything more important if you can't bother to clean up typos, misspelled words and grammatical errors.

You also need some explicit signals that your site is trustworthy, such as relevant "endorsements" or verifications by the kinds of organizations that do that kind of thing.

(There may be a few other things you need, but this is a place to start.)