The Sky Unlimited 109 is by far my favorite of FS WWII birds.
I agree with Patchz on this one.
Lovely angle and lighting, but compression is evident, and at only 129kb, you could have saved a bit more of it.
What program are you using for compressing to upload here?
I'm also very torn on your choice of color for the border.
On one hand, it does match the yellow in the plane, it has a great striking contrast to it that calls attention to the shot, but unfortunately, it also calls too much attention to itself, and away from the main focus of the shot.
Maybe see what it looks like in white,silver, or grey?

Overall, I'm giving it a 7.
The detail and quality of the paint & plane carry this shot a lot, but it still took your compositional skills to set everything up, and decide when to take it.

Very fine job.