Issues with CMS collections linking to my slider

Please help me!

This is probably an extremely basic thing for you experts out there, but I am struggling immensely!

I am creating several items in my ‘Works’ CMS folder, but I am not sure how to add these as slides on my slider. When I add a slide in the settings panel, it appears blank in preview mode. The Webflow video tutorials are great, but I cannot find anything that relates to this specific issue.