Thread:Super Saiyan Kolra/@comment-34110427-20180907001845/@comment-33126588-20180907003657

Step 1: Click "Add Photo" on the bottom right of the desired slideshow

Step 2: Click "Add a photo", the blue box

Step 3: If you've uploaded your thumbnail recently, it should be easy to spot from the current list. If not, copy-paste your thumbnail's text into the search bar. Select it and hit the blue "Select" box at the bottom right.

Step 4: From here, you can just drag your thumbnail to the very top. Max amount of thumbnails allowed is 25, so if you're adding a 26th one, be sure to delete the very last thumbnail (the one that's 25/25 before adding your own).

Step 5: Hit "Finish" to ensure your thumbnail is properly in place.

Glad to help!