The car looks great to say the least. Your top looks amazing. Your top looks like the top on my 08 GT/CS. Now, have a 2012 GT Convertibles top has shinny spots on it, looks as if it may be rubbing on something. I've seen the same issue on several other Mustangs.
I can appreciate the work that goes into it. I had gotten mine ready for a car show.
On my 2008 Mustang GT/CS I had used 303 protectant. (use on dash, seat, etc) And put it on with a paint brush. Looked great but won't get to see how long it last as I sold it and bought the 2012. Thinking of doing the same thing to this top.