OK. Now I see that. Unfortunately you haven't painted the air intake fully.
Look at the pic below and paint the P-40 chin correctly. You have to paint on the white too.That's way you made these masks for protection these areas you need to keep white.Understand?
Concerning the cowling.... Harry take a piece of the sprue frame of the P-40 and drop it onto the floor ( carpet). Then go down on knees and having the piece in your sight , look around carefully. Slowly and carefully around .