Creating an image for an embedded YouTube video

Hey guys, I’m an extra-newb and I’m having an issue with what is probably a dumb-easy fix:

I embedded a YouTube video on my page that you can play right in the field if you visit the link, but in the main page there’s no image, only the link.

How can I get an image, or at the very least a screenshot of that YouTube video, up and visible on the landing page? Thanks!