One idea could be that the admiral with black hair and glasses is leading a space exploration mission to a distant and mysterious planet. The crew faces various challenges like strange gravitational fields and alien life forms, and the admiral's intelligence and leadership, symbolized by his glasses perhaps, help them through.
Commonly, in such cartoons, the hair could be styled in a way that stands out, like being colorful or having a special shape. The glasses might be big or small, and they could be used to give the character a studious or nerdy look.
The Black Deacon was a Japanese anime that revolved around the story between demons and humans. The protagonist, Charles, had golden hair and a very proud personality, often showing the temperament of a queen. At the same time, he was also very good at being jealous and always had a suspicious attitude towards the people around him. Charles's character made him play a very important role in the story and was loved by the audience.
There are many good animes. Here are a few works with silver or black hair:
Alan, the main character in the movie, had silver hair and bright blue eyes.
2. Kirito, the main character in the Sword and Sword Art Online, had silver hair and black pupils.
Naruto's main character, Naruto Uzumaki, had blonde hair and bright blue eyes.
The protagonist of One Piece, Monchi D. Luffy, had silver hair and red pupils.
The main character in the Death Note, Yagami, had silver hair and black pupils.
She might have a smart and trendy look. The short hair could give her a bold and confident vibe, and the glasses could add a touch of intelligence or quirkiness.
First, start with the basic shape of the head and sketch the outline of the glasses. Then, draw the curls in loose, flowing lines. Make them wavy and add volume. Pay attention to the direction of the curls for a natural look.