What facial expression should I give Twilight?

[NotoriousSMALL 1,984]

 

 

And here's a link in case the image breaks: http://i.imgur.com/8ZndBWi.jpg

 

Also, I think I'm going to end up tracing this.

[Princess-Sunbutt 268]

Perhaps a small smile or more of a neutral expression, nothing too crazy. Good drawing by the way, better than anything I can pull off. 

[M'aiq the Liar 5,804]

A small smirk or a more neutral expression. Her body language doesn't convey much more than that, but it is a very awesome drawing. Well done.

[CavyShy 169]

Perhaps a small or 'mischievous' smile. I think adding a full smile with teeth and all that may be too much for Twi's personality. Good drawing, by the way!

[__Duck-Quack__ 151]

There is a twilight expression in the mysterious mare do well that I despise so if you know what I'm talking about don't use that.

[NotoriousSMALL 1,984]

Thanks all! I'm going with the smirk. I'll probably post the finished, traced version

[SilverStarApple 850]

A kind, pleasant smile. She's from Canterlot, she was raised by Princess Celestia and two loving parents who gave her all the books she wanted and needed. Everything was great for her, and growing up in Canterlot probably includes fake-smile training.