Nice work so far

The rivets look GREAT!
One thing you'll notice in the photos I sent, check your PMs, is that the trailing edge of the cowling where the cooling flaps meet it is a straight line, not scalloped. For some reason it's always shown this way on drawings

The leading edges of the cooling flaps themselves are a bit rounded which creates a scalloped effect.
Here's a picture, although it's a 22-

And I had forgotten about the FABULOUS LARGE images on the Nasa image archive!!!
You can see all the details in this photo, including the cowling!

Here's another-

That should help some