If you are going to cover an incredibly iconic song like Womack & Womack’s Teardrops, there are only two routes you can take. Either you stay faithful to the original (begging the question, what new do you bring to the song’s ever-evolving story.) Or you can do something new with it. (Inviting suggestions that you are suggesting that you can do better.)
Duncan Saige, however, manages to find a third way, one that takes in both approaches, and his version is faithful enough to the original to come off as a mark of respect and fresh enough that the song feels as if it has been updated for a new audience.
That’s how you do it.