Severely injured house sparrow (graphic pics) HELP?

Found this house sparrow in my garden badly injured on one side of its face.  Looks like half of its face is gone and its eye is gone and skull is broken in pieces missing a part. I got tissue and stopped the bleeding but what can I do to help it.

The top beak is badly damaged too missing the top of the top beak . This happened around 10 hours ago its still alive now