Can I do this on Li.st?

Things I can't figure out how to do or li.st doesn't do them. Please help of you know how to do these.
  1. Can you embed a video?
    Not just a link, but show it like you would a photo?
  2. Delete a draft of a list?
    I'm sure this is something obvious that I'm missing. I'm sure I'll feel dumb when someone points it out to me :)