She's tall, slim and young with short, dark, curly hair. or She's a tall, slim, young woman with short, dark, curly hair. In English, adjectives go in a certain order. It sounds more natural this way. The order is: size; age; colour; origin; material (more or less) e.g. A little, old, blue and white, Chinese, porcelain vase. I hope this is what you were asking! :-)

how do I answer this question?

she's a young,slim and tall woman with curly short dark hair. Correction: She is a young, slim and tall woman with dark, short, curly hair. (For formal writing it is better to say 'she is' rather than 'she's'.

that sounds pretty good to me. she is young, slim and tall.. with short, curly, (and) dark hair.