It looks great. Something you might do if you have the time or inclination might be to do different iterations of the refit as seen on novel covers. The image of the Enterprise in the nove cover for ST:TMP looks a bit different. fewer brush strokes--and seems a bit sleeker.
Over the years there have been many drawings of the TOS Enterprise--and each has its own charm. Kimble's drawings have been used dé rigeur
--and that is fine--but it would be nice to see the original model perhaps slit scanned along its length if possible--a mere photo will not show a true profile, perspective and all...
A resulting blueprint off the model directly might be nice to see...