Annabeth is a very 'Wise girl' ( those who reads the books will see where I got that from. ) try for something along the lines of the movie (cringe) but not a lot of it. If you can try and read the book or find a pdf and try to match a voice to her character! 

( Adding Images later )

Annabeth has long, curly blond hair "like a princess." Percy said that she "looked like a typical California girl, except her stormy gray eyes ruined the image." Percy claimed her eyes looked calculating, like she was analyzing whoever she was looking at during a first meeting, as if thinking of the best way to take the person down in a fight. According to Magnus, however, Annabeth's gaze instead looks like she’d chosen a target in the distance and was going to march over and destroy it. Jason Grace also described Annabeth's eyes were like calculating a million things at one time, and when he entered the Rec Room for the Counselor Meeting, he said that Annabeth had "an expectant look, as if she were trying to extract information out of him by sheer willpower 

Despite being taller than Percy originally, she is now shorter than him, standing at about 5'7 while Percy stands at 6'0.

She has tanned skin, a great figure, and apparently looks very athletic. She often wears a ponytail, her magical Yankee cap (though only in a fight, since it turns herself invisble) and/or her orange Camp Half-Blood t-shirt. Percy Jackson once claimed in The Demigod Files that "most people can't look cute in full Greek armor, but Annabeth pulled it off." In The Last Olympian, Percy starts to think of her as "seriously beautiful", even though she had only been "cute" before. She is described as 'cute', 'pretty' and 'beautiful' many times in the books by Percy. Other characters have said similar things, such as Aphrodite telling her she had "grown into quite a beautiful young lady" and Chrysaor saying she was "lovely".