Knite that is fantastic looking bare metal. I get a sense of dents and other minor surface deformations. Very nice work!
Just a few things, minor details really but these skins are worth the extra effort IMO. First, the J has a recessed landing light under the port wing only - check Fester's 38J for confirmation, or I think my 80th FS J's have that detail correct. My earlier J skins are wrong. The early 38's - F, G, H's had a recessed landing light under each wing, but with the J they went to the light under the port wing only, and with the L it was moved to the leading edge of the port wing.
You don't show a pic of the main wheels, but if you are using the default main wheels, please note the default rims and wheel covers are incorrect, and the shading problem between the tire tread and tire wall in the pic below. The tire sidewalls are too light or the tread is too dark:
This pic shows the correct wheel rim, You should be able to cut it out and work some magic with it. I swear when I look closely at Fester's I can see hints of a disc brake assembly inside!
You could add a small shadow and/or grease & oil blowback between the spinner and the nacelle - I think there is enough clearance there for a small shadow line to form.
You could try adding just a hint of blue to the reflection in your nacelle mirrors, to represent the reflected sky color.
I think Filly's noseart could be darker to have more contrast against the bare metal - her belly washes out against the nose metal and she has no facial features - but the original color pic shows these details (also the blue towel is too bright compared to the photo).
I think she's worth spending more time on if you choose to - I spent alot of time adding detail to the noseart image of my P-38G "Beautiful Lass" and it may be the one skin I'm most proud of - the image I started with was very bland and lacked detail. For a while after I finished it, I wanted to take up painting female nudes
Again, gorgeous skins as is, but well-worth any extra time you choose to spend on them. I know I'll see alot of them in the arenas!