Thanks GFR, I'll pull them both back.
Thanks Jarink!
The prop shadow was something I didn't want to add, but felt compelled to after looking through all the various P-61 and F-15A photos I've been using for reference. You are indeed right that the sun comes from upper left for my lighting and shading (whether I'm always successful in conveying that is another matter altogether!). As you can see in earlier versions, the shadow wasn't there at all.
I saw it the prop shadow in another photo where the aircraft and sun were essentially a mirror of mine. Look at the shadow on the ground in the photo below. The sun is fairly high in the sky and slightly to the right.
Northrop RF-61C Reporter
Look at the angles of the shadows from the wing, the sun is slightly lower on the horizon, but just.
Now compare that with this photo. Look at the shadow on the ground.
File:F15a.jpg - Wikimedia Commons
The sun is low on the horizon and so the prop blade stretches way down the boom.
You are right, though, it is probably a bit too long. I'll bring it back to about the line in the cowling.
Thanks!
Logan