I have made 16 bmp image files, and each has all default faces, and in addition to them, one of mine. So by using some of my faces, you don't lose any of default ones!
I haven't placed a picture of them here, but [B]download them, and take a look, you'll see, they are fine[/B], and not childish.
All you have to do, is to download this winRAR file, unpack it, take a look at them, and if you like one of them, rename it to "faces", and copy to your Stronghold Crusader folder (where you have installed the game), it's mostly "C:\\Program Files\Firefly Studios\Stronghold Crusader". This way you will replace your original "faces" file, so you can backup it - before this copying, just move your old "faces file" from Stronghold Crusader folder somewhere else. This way, if you decide not to play with my faces, just delete the new faces file, and copy back your old "faces".