Describing people

I have got just one  sister, her name is Pilar and she is older than me. She has short dark hair with big brown eyes. About her personality, she is too nice to people but sometimes she gets really nervous too soon. When we were younger, we passed all the time quarrelled but now it is different: we talk more about our personal problems, we share our hobbies and we usually go out together. At this moment, we do not see each one very much but, in spite of that,  we still talking and laughing everyday.