1- Log into your DPD account
2- Select Settings>Checkout from the left menu of your DPD dashboard, select the Theme Manager option, and then select to Edit your active theme
3- In the theme editor choose the Layout option
4- The store image tag will be on line 41 if your layout hasn't been edited yet, find that and paste this over it with your desired URL replacing GetDPD.com:
<a href="http://GetDPD.com"><img src="{{store.image}}" /></a>
5- Be sure to Save when you're done to have the changes apply.
Before and after images to illustrate:
