['My oldest walked to a neighbors house. It was his first time doing it alone.', 'Kids grow up so quickly! Did you feel nervous about it?', "I did, but I also knew he was ready. Plus, he didn't have to cross any streets."]
I bet he felt very proud! Sounds like you are a great parent. A good combination of trust and reassurance.
I let my oldest walk down the street to a friends house. It was his first time doing it alone.