snake posted a nice fighter ship already - or 3 pictures of one, why not try to use that? it looks fine - although not quite the ones from the intro of course - those have round cockpits. ( mind you, those are more than 8 centuries old - so what was linked in those thumbnails fits well if you insist on this inversed Y shape )
edit:
anyway - playing around with postprocessing and a few edgefinder filters - here is the best idea the old snubs may have looked, - not so much the sharp angled ships they seem to prefer now...