What do you visualize when you read this character's personallity? PLEASE AND THANK YOU?

I'm thinking tall, skinny, sometimes hard to get along with as stubborn because she is intelligent so she finds it difficult to accept oter peoples views. Also black hair comes to mind as she is negative - i'm thinking maybe curly and long sometimes a bit crazy and hard to control. Clear porelin skin as she takes pride in her appearance as she is observant as you stated. Sometimes has outrageous fashion crazes as she likes being different but also links to her sometimes crazy hair and links to her mostly happy personality as her fashion could be quite funky, colourful and crazy at times. Hope this helps, it's the character that came to my head reading your description.