"A young boy in a Cookie Monster t-shirt sits on the ground on a fall day, holding a fallen leaf in his hand as an expression of joy lights up on his face."
You have a child who is very amused with a leaf he found during fall or the beginning of spring.
A young boy wearing a blue cookie monster shirt plays outdoors with some leaves in the yard.
Boy wearing blue cookie monster shirt holding up a leaf from the fall.
Young boy staring excitedly at a leaf.