Describe Ralph's physical features and also his reaction to being on the island list 3

From the text:

"He was old enough, twelve years and a few months, to have lost the prominent tummy of childhood and not yet old enough for adolescence to have made him awkward. You could see now that he might make a boxer, as far as width and heaviness of shoulders went, but there was a mildness about his mouth and eyes that proclaimed no devil."

At this point in the story Ralph is excited there are no adults. he likes the freedom of doing what he wants. He likes the prospect of exploring the island for adventure.