It would be necessary to change the Bynars picture (It is too much compressed) in the Race folder of the Images folder and the Ktarians picture (It is slightly blurred)

There's not much we can do about the Bynar image; there are very, very few usable images available of them online, and adjusting the image dimensions so it fits ingame causes it to distort.

As for the Ktarians, a similar problem exists; there aren't many images of them available, and usually they are low-quality screen caps. It's easy enough to sharpen the image, but the image starts to look ugly if you sharpen it too much.

Same thing for the Tholians as well actually. And i'd like to get a better one for the Sheliak, but to my knowledge we have the only available image.

I've managed to improve a few others though. Some of them looked a bit washed out or too dark, so i've brightened them or added some colour as necessary. They will be in the next image update...whenever that is.