Replace all of the text in the "template" section of your custom certificate with this.
<div style="text-align:center; font-family: 'Helvetica';">
<!-- CERTIFICATION SECTION -->
<br><br><br><br><br><br><br><br>
<div style="font-size: 50px; font-family: 'Times New Roman'; color: #005478;">
<strong>Certificate of Completion</strong>
</div>
<div style="font-size:16px; color: #847770;">This is to certify that on {issued_date}</div>
<div style="font-weight:bold; font-size: 50px; font-family: 'Times New Roman'; color: #2B95B8; text-decoration: underline; width: auto;">
<strong>{first_name} {last_name}</strong>
</div>
<div style="font-size:16px; color: #847770;">has successfully completed the CAWST workshop</div>
<div style="font-weight: bold; font-size: 25px; color: #005478;">{course}</div>
<!-- COURSE DETAILS SECTION -->
<table>
<tr>
<td width="20%"></td>
<td width="60%">
<p style="font-size: 12px; color: #847770; width: 80%;">
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque ullamcorper lorem ullamcorper egestas ultrices. Aliquam ultrices lacus eu purus varius viverra. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Suspendisse potenti.
</p>
</td>
<td width="20%"></td>
</tr>
</table>
<br><br>
</div>