That is looking excellent, Craig!
The original/correct fuselage tubular structure doesn't have that "kink" in the upper line, aft of the pilot's seat, as portrayed in your model. Aft of the main box structure, it was a straight line across the back to the tail. There were wooden formers that were installed atop this structure, aft of the wing, which blended the upper wing contour into the fuselage back.
Here are some 1927 photos of the original, in-case you haven't seen them:
This photo clearly shows the wooden pieces added atop the tubular frame, including a beam running down the center of the upper fuselage, which blended the fuselage into the wing and horizontal stabilizers and gave the final shape once covered in fabric.
Also, I'm sure you know of the history of the aircraft's spinner. Originally, it was quite blunt/rounded (as you have modeled, and as seen below), and was covered in the same turned "swirls" as seen in the metal of the cowlings. However, it didn't last on the aircraft very long, as when it got to New York they discovered a crack that had developed in the aluminum. A new, more pointy spinner was quickly built and installed by Curtiss, which is what was used on the New York to Paris flight and which is still on the aircraft to this day (and which is what has been recreated on John Norman's reproduction).
As you can see by this photo, the lower shape of the rudder was quite different when the NYP was initially built. I recall reading about the shape of the rudder being changed, but I can't remember exactly when that occurred (I will work on finding out).