As you know, it's impossible to tell Argonians apart in the game and same goes for Khajiit.

Sure, there are lizards with different fins and cats with different mane styles, but the head model is identical for all of them.

If it wasn't for the name showing up when you move the cursor over them, you'd never know. If someone shows you a picture of an Argonian or Khajiit from the game, you won't be able to say who it is just by looking. Maybe thanks to the clothes but not because they're easily recognizable.

But more to the point.

I did my best to somehow make her look more disguinshable from other Argonians. I made her face more gaunt, reduced jaw width to give her a less square shaped head, set the concave/convex slider to the left so her jawbone wouldn't be nonexistent as it's the case with most of them, and if none of that works... I made her skin (?) scale tone more blue-ish.

http://i.imgur.com/MOscem5.jpg?1

A very slimming head.

And there are not many Argonians who are those colours. (If any)