Is it weird that my first thought after seeing this , was to incorporate the cracks into an alligator skin pattern in various shades of green?
Call me crazy but I think it would have been pretty cool.
I did this a while back and it went pretty well but I eventually lost an engine block half from the '69.
It now sits in a box waiting for a doner.
Nice work so far by the way.
I use an emery board for both as it has a different grit on both sides and provides a semi hard, flat surface.
Perhaps I should have mentioned that in my post. (my bad)
It looks to me as though the cowl is misshapen at both ends and would be the first thing I addressed.
I would add a strip to the front and rear cowl and slowly sand it to the shape of the mating pieces. (hood and trunk)