Now answering to your points:
1. You're right, Liara is the only one showing eyebrows, yet we know there are millions of other Asari in the MEniverse right? I believe some of them do have eyebrows, but thanks for the tip.
2. You think? Hmm, in ME I found several types of Asari, some dark blue, other light blue, other green... can't just be a pale-blue one?
3. I know about her head. Unfortunately I use a crappish headpiece in the program I use and as for now I can't improve it. I will though, as soon as I can.
Thanks again for your critique!