Here's the youngest, taken today just before his first day of school, in a photo he chose himself for this post. He's been looking forward to school for ages ("but not till I'm five").
This time last year, it was his sister's first day at school. You can see her first-day excitement back then.
She was brim-full of enthusiasm, whereas he's keen, but more relaxed, almost stoic. They both have confidence, but in different ways.
It's worth showing a photo from yesterday, taken just after his sister's first day back at school:
He's often quite natural in front of a camera, albeit less so when he's asked to pose.