"In those days she had looked upon the Lord of the Noldor, dark-haired and white-browed, eager of face and thoughtful-eyed, and he seemed to her fairest and noblest among the Eldar, and his voice and mastery of words delighted her." "...black hair and brilliant grey-blue eyes." (HoME)
Okay, maybe it is not exactly thoughtful-eyed and white browed, but this is a very beautiful picture of Finwe. Maybe a bit more eager than I expected him to be. Well, maybe he became so later when he was older. Or well, younger and still on the journey with his people/tribe to Aman. On another thought, one of my associations was Winnetou. Maybe this is not a name to most people, but here in Germany the books and movies with this native born character are quite popular. You might look up the terms Winnetou and Pierre Brice (the main Winnetou actor). I like how he's looking so wake and determined right at you.