Previews are the most common thing that are missing in requests. Can you add links in the request template? To make it more convenient for the requestor consider adding the following two links for how to create previews:
https://discuss.eroscripts.com/t/how-to-create-gifs-video-previews-for-your-scripts/18520
https://discuss.eroscripts.com/t/how-to-create-a-video-preview-for-your-script-with-video-thumbnails-maker/16556
Maybe also this:
https://discuss.eroscripts.com/t/getting-gifs-and-videos-to-preview-embed-correctly-on-eroscripts/3792