Realistic face attempt!

[Markdotea]

Hey this week I decided to try creating a realistic face, on the one hand I drew the structures trying to paint it realisticly, but then I decided to bring a blue lightsource, what did confuse me, for not only my weak knowledge, but also for having almost no references of how it would react!
Ignoring the flaws, I've got some bigger issues, such as painting noses and bringing the face lines without aging my character too much! I hope you guys can help me!
Thank u!^^/


(link in case it doesn't work: http://fav.me/d61qvz5 )