Underline your headline text in blue so that it appears to be a hyperlink on the page. This fits in easily to websites without appearing to be a banner ad. Keep things familiar. When it looks like their computer interfaces, your target customers will be familiar with it. Drive your visitors from a banner ad to a form that requests more information.
Most affiliate programs drive people to a home page, full of confusing choices.
Or they drive people to a one product sale and hope for the impulse buy. Send them an email, automate your follow-ups, and gradually introduce the sale. Most people won't buy until 3rd or 4th contact, no matter what you do. The new mode of affiliate programs is to merge your products into the context of other websites. It is easy to fall in love with the allure of millions of impressions at bigger websites.