Deck backing: 1) On the right hand side of the screen go to the Deck and Tables tab. 2) Click on the deck you want to modify. 3) Scroll to the section where you can upload the back of the deck. 4) Next, go to the Art Library tab (also right hand side). 5) Type in the keyword (tag) for the image you desire. 6) Drag that image to the card backing section. 7) Hit save changes. For the front of a card do the following: 1) On the right hand side of the screen go to the Deck and Tables tab. 2) Click on the deck you want to modify. 3) Scroll to the card you want to modify and click on the card to bring up the card editor. 4) Next, go to the Art Library tab (also right hand side). 5) Type in the keyword (tag) for the image you desire. 6) Drag that image to the card editor upload section. 7) Hit save changes on the card and then when eventually done on the deck. - Gauss