Adding an SSL trust seal can increase trust from someone wanting to purchase from you and therefore increase the likelihood of them completing the order.

Create and activate a plugin using the following code:

<?php
/*
Plugin Name: EDD Checkout SSL Trust Seal
Plugin URI: https://himpfen.com/ssl-trust-seal-easy-digital-downloads-checkout
Description: Adds an SSL trust seal on the EDD checkout page.
Version: 0.1.0
Author: Brandon Himpfen
Author URI: https://himpfen.com/
*/

function edd_ssl_during_stripe() { 
 ?> 
Add HTML here...
 <?php 
} 
add_action( 'edd_after_cc_expiration', 'edd_ssl_during_stripe' );

The SSL trust seal will be placed at the bottom of the Easy Digital Downloads Checkout page.

You can customize the appearance of the SSL trust seal using CSS. Example:

#edd_purchase_form_wrap .class-name { 

}

With .class-name being the CSS class from the HTML used in the plugin code.