The psychic stun crystal looks very nice. A touch more light on the front end, just maybe.
For the organic armors (psy & crys), could you do a variation on the Classic OA 3x3 shape, rather than a 2-3-2 hex armor? It should be clear that these armors can regenerate during combat
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For the Polaron missile, you need to brighten it up, and probably set the warhead color to a yellowish hue (like the PPB?)
I'm not sure what the phased torpedo image is: either a normal facing cannon, or a "backwards" facing hammerhead rocket-projectile. This weapon is the phased Version of a classic Antimatter Torpedo.
The phasedtorps image you posted would be very good for a cannon of some sort; don't throw it out!