Deciding exactly what makes a girl beautiful can help you focus your description. Think about each specific physical feature, such as her eyes, hair or smile. Ask yourself if any details in particular draw your attention and stick in your memory. Think about what makes each characteristic so appealing. Perhaps her eyes are an unusual color, such as a deep shade of violet blue, or her smile is engaging because it seems so joyful and sincere. Don't forget to include some characteristics of her inner beauty such as kindness or her ability to enjoy simple pleasures; no one wants to be admired for their looks alone.

Don't forget to include the impact her beauty has on you. If you find her beauty so overwhelming and distracting that you can't concentrate on anything else, let her know that's how she affects you. If you can't stop thinking about her or picturing her in your mind when you're apart, include that detail in your description. On Psychology Today, clinical psychologist Leon F. Selzer says in, "The Hidden Role of Flattery and Baby Talk in Romantic Love," that praising the one you admire helps inflame passion. An honest and heartfelt expression of how her beauty makes you feel enriches your description.

Poetic comparisons enhance descriptions of a beautiful girl. Consider similes that use the words, "like" or "as" to highlight the girl's qualities in the comparison. For example, "Her black hair shimmered like a lake in moonlight," instantly conveys the mental image of ripples. Metaphors that describe the comparison without using "like" or "as" also convey an image, such as: "Her eyes were pools of bejeweled water." Hyperbole or exaggeration is also often used to describe beauty as in the line, "Your beauty takes my breath away."

Throughout the centuries, poets have used figurative language to describe beautiful women. Shakespeare's sonnets provide examples of how to use such literary devices. When Romeo first sees Juliet in the well-known play, "Romeo and Juliet," he describes her beauty using metaphor, simile and hyperbole, "Oh, she doth teach the torches to burn bright! It seems she hangs upon the cheek of night, Like a rich jewel in an Ethiope’s ear ... I ne'er saw true beauty till this night." You might not be a Shakespeare, but you can learn to describe beautiful girls using poetic language.