Type in Deadpool 2 (2018) R1 CUSTOM in the search box at the top of the page, NOT the QuickFind search box, the one below it. Select DVD movie from the box that's next to the search box that let's you choose what type of cover you are looking for. Click on Go button. When the title appears, click on the titles name you are looking for and an image will appear underneath it. Click on that image and it will bring you to the page that you can download it from. If you want to, you can again click on the image and it will enlarge it to give you a better view. If you have a Gold membership, click on "Download Uncompressed Cover" button to the right of the image, if you aren't a Gold member click on "download cover" button located beneath the image.
You can click on the link below and it will bring you to the image you requested if you still can't find it.
This link is for an alternate cover of the same Region code.