<a href="https://microglow.org/seattle/the-skin-firm/" title="The Skin Firm — microneedling treatments in Seattle"><img src="https://microglow.org/seattle/the-skin-firm/badge.svg" alt="The Skin Firm — microneedling treatments in Seattle" width="300" height="84"></a>

Paste it into your website — most site builders (Wix, Squarespace, WordPress) have an "embed code" or "custom HTML" block. The footer is a good spot.