Thanks guys,

I think the latest renders are looking pretty good. I would turn on shadows but I can't seem to get soft edges with mental ray so I just kept ray traced shadows off.

I would like to add a panel line layer. I would also like to add some kind of displacement to simulate the fabric sag between the wing ribs.

I am in the process of drawing up the actual 9-color christen eagle II paint scheme on my plane. So I will have some more renders with a different paint scheme soon.