To be brutally honest with you, they look a bit amateurish, and kind-of miss the point of the research itself. The Alien Mind is about the aliens' thoughts, not their brains. Orbital UFO Activity is about shooting down a Carrier UFO -- the UFO image you've used isn't even remotely like anything in the game.
Also, the images we use are a lot larger than 256x256, or at least they will be once we finish the GUI redesign. In that event, such small source images would become too small and ultimately useless.
Regards,
Winter