Well, you've done a very good job with the radiator section, which is good because that's probably the hardest part on the aircraft. Mostly, I'd suggest you add shading to the top of the fuselage, which looks a tad flat, especially behind the cockpit. You might want to add a bit to the lower part as well.
If you do that, I think you can achieve a very good result. That is, you'd show both the massive aspect of the aircraft, plus its finesse. It's a bit contradictory, but that's how I've always thought of the Typhoon/Tempest design.
You should also consider making the rocket rounder with the shading.
The more I look at your drawing, the more I like it and think it has potential. I'll be waiting for it!