Looks quite good, though it'd be neat to smooth the jagged edges of the lowres cockpit graphics.
The engine glows color fading should be smoother, IMO , and more aqua-blue. And it's clearly visible that those are on a 2d plane glued to the ship. Is it possible to make their plane always face the player to avoid that?
Mining station needs another tile texture, this one looks strange...the armor plating should be more subtle. And IIRC the large armored surfaces were broken up into smaller pieces by thin areas exposing some machinery or something.
The shine effect on that Stiletto is really wierd, it looks like it's wrapped into plastic foil
Otherwise, it looks great, especially the space stations and stiletto textures.
One question: Where did you get the Broadsword textures from?