Hey guys! I'm writing a novel about a 14 year old boy and his struggle to adapt in his new town. I need help with two things, but first here is some background information. My 14 year old protagonist has a pretty big family. He is close to his father and his orphaned brother of the same age. His orphaned brother had a family who died when he was a little kid, and the protagonists parents are his godparents. My protagonist also has a ten year old sister, a seven year old sister, and a five year old brother. Now here are my questions: 1.) I have no idea how the five year old brother of his should act, any ideas would be helpful. 2.) The protagonist has a rivalry with his cousin, a twelve year old boy. I don't know how to portray their rivalry. Any help would be appreciated. Thank you!