Sign into the Edit page in your Onescreener account and select the CONTENT section.
Select Link image from the list of content items, and click on the edit button to the right. Then, upload the cover image for your link.
Next, add the URL to which you want the image to link by copying/pasting it from your site's browser into the URL field.
Decide if you want the Image position to be Cover view (this image will be cropped as you adjust the placement of it on your Onescreener) or Fit in view (this option maintains the whole of your image when adjusting the placement).
Preview your Onescreener to make sure that you've made the right image choices, and when you're satisfied, hit Save at the bottom of the page.
NOTE: If you wish to adjust the placement and size of your image after saving, click on Continue and make the adjustments for the Desktop and Mobile screens. Preview each change to make sure it's right for you.