Wow... just... wow... this is a really great pic. Heh, the concept sounds kinda familiar- I invented a huge planet-busting Dreadnought (The Purgatio Luminarium class Titan Dreadnought, Types I,II and III) for an alien race who were brilliant ship-builders with powerful telekinetic abilities but very frail bodies and who only have about 20-30 years of 'young adult' stage in a lifespan of 250 years. Hence why their standard tactic is orbital bombardment of enemy planets.

Of course your ship looks nothing like how mine would - mine would have smooth, elegant curves and lines.. I guess like a sleeker silver-grey, less beat-up looking Mon Calamari star cruiser? Sort of? But that ship looks pretty damn awesome.