Overall it's very good.
I do have a couple of issues.
1. The whites of the tail band and "3" do not match the other white areas.
2. The mottleing pattern on the fuselage is incorrect. This aircraft had it's mottling in bands. See the image bellow:

This plane was a Regensburg built 109, and the other aspects of the pattern you represented very well.
Check out the following link for the basic 109G patterns based on the build factory:
http://theprofilepaintshop.blogspot.com/2013/10/chosing-correct-wingpattern-for-bf109g-6.htmlI'll try to gig up some good photos of real 109G-6s from the Regensburg plant.
Not related to your work, but I already have a skin on the G-6 from 7./Jg 53. Mine is White 9 "Seenann"
With only 5 available open slots for the G-6, I do not think it is wise to have redundant coverage of squadrons. Maybe a plane from a different squadron in Jg 53 would be better?