To add a logo/cover page to your Proven account first, log into the dashboard here.
Once you have logged in click the button called "account" in the top right corner of the screen.
This will bring up a drop-down menu. Within the drop-down menu click location info.
Once you have clicked location info you should see a page with your current logo/cover image. Simply click edit as shown in the picture below.
Once you have clicked edit, a pop-up will appear. Click "choose a file" and upload your image. Congratulation you have changed your logo/cover image!