Take all I say with a grain of salt.
Meh... the Ravana is my favorite capship in FS2 easy, and this one is looking great! However, there's just something about it that doesn't seem quite right. I think it's the "grid" stuff that people are referring to? I've circled the things that aren't sitting quite right with me in red:

And the large spikes on the top seem a little short? Circled in blue.

Anyway, once textured, the grid things certainly won't stand out quite as much, so I won't make any real suggestions until I see a textured version. Excellent work, Raven!