That was a book. Bf 109K4 1945 jg53 "Operation Bodenplatte"
I have found it:
https://flyawaysimulation.com/downloads/files/14341/fsx-luftwaffe-messerschmitt-109k/
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Like I said, your skin and this other one based the same material have mixed elements. which are contradictory.
I did some searching for reference photos and this is the closest I could find to your skin's scheme.
This does seem to be a I/Jg 53 aircraft with a light colored cowl ring and black tail band. It's a G-10, which is fine for the AH K-4. I'd say that you adjust the adjust the markings and cammo pattern to match the photo.
Here's a scheme that I think would be a good example of the fuselage paint pattern. The low contrast of the top colors makes me think that it may be painted in green and brown instead of gray and green.
Devil, you might mention the leading edge blending technique also.
Yes, it would be a good idea to not have pant colors change on a seam in the 3D model. Try panting the underside color on the leading edge of the upper wings and horizontal stabilizers and blending it into the top colors. Also, try blending your cammo colors across the seam in the upper cowling parts. I noticed these flaws in your other K-4's also.