Some points
1. To me the beginning of the intake trunk looks too straight, the top should bend upwards a but the highlights dont show this.
2. The nose doesnt look round but rather like an upside down egg shape.
3. On the gun bay it looks like it is a tube welded to the bottom of the nose while in reality its a canoe shaped deal, the shadow cast by the Avionics bay cooling scoop should not be visible on the cannon fairing.
4. Also the tailtop looks a bit strange to me, it looks like the front bit is taller then the rear while in reality this is a level area.
All in all a strong profile showing a lot of promise but still some room for improvement but that is why it is still a WIP. I particularily like the way you have done the nozzle and the titanium shock proving under the tail area, it has that grimey banged up look that I remember well from german phantom's.
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This is looking great, GFR, It makes me want to do one. It is such an emotive shape and I think you are capturing the mass and shape very nicely. I just Lurve that metalwork. It is coming along well.