Chapter 1: "The Worst Birthday"
* Hair: "Harry's black hair was even messier than usual." (This tells us his hair is naturally messy, and likely a bit unruly.)
* Eyes: "His eyes, the same startling green as his mother's, were narrowed in thought." (We learn about the defining feature of his eyes, which are green like his mother's.)
* Scars: "Harry was staring at the lightning-shaped scar on his forehead." (The famous scar is mentioned as a prominent physical characteristic.)
* Overall: We don't get a lot of description in the first chapter, but we get the impression he's looking tired and preoccupied.
Chapter 2: "The Worst Birthday (Continued)"
* Body Language: "Harry stood up, his knees cracking...He shrugged his shoulders, trying to pretend he wasn't so worried." (This shows Harry's physical response to his anxiety, demonstrating his nervousness.)
* Clothing: "He was still wearing the maroon sweater Dudley had given him..." (The mention of the sweater gives a glimpse into his clothing and possibly his living conditions.)
Important Note: J.K. Rowling doesn't give us a detailed physical description in these early chapters. She focuses more on the psychological state of Harry and his surroundings, hinting at his vulnerability and anxieties. It's worth noting that Harry's physical appearance is often overshadowed by his emotional state and the magical world around him.