Warhammer Fantasy Banshee

I have had this Warhammer banshee model sitting on my painting table for a long time, and I just finally got around to finishing it. I was trying for a ghostly, ethereal look to it, which was hard to achieve. I'm not completely happy with how it turned out, but I'm not sure how to accomplish what I was going for, so it will have to do. Have a look at the pictures below and let me know what you think. If you have any tips on how to paint something to look like a ghost, feel free to share them.

Warhammer Quest: More Waters of Fate - Part 2

Our noble adventurers are searching for another Fountain of Fate in the hopes that its magical waters will reveal to them the source of another imminent invasion of the Empire. They have already started exploring the dungeon that is believed to contain the fountain, but were unable to locate it on their first attempt. See more about that attempt here. Now they have returned to the dungeon to continue their search for the fountain.