Can I Make my Long Face Appear Shorter by Shortening my Nose and Chin or Possibly a Fat Graft?

It would be helpful to see your profile view, but I think that you are on the right path.  Regarding your nose, it is somewhat long and can be shortened a bit (but be careful that your surgeon is not overly aggressive and turn up the nose too much, which feminizes the appearance).

While your chin is a bit long, shortening it by removing some of the vertical height is indeed an option, but it is quite a bit of surgery for a small amount of gain.  Rather than fat grafting, I would consider implants at the outer part of your lower jaw (the "mandibular angle) which would "square" the lower face.  Usually a combination of a few of these maneuvers will lead to a nice improvement in your overall facial balance.