Well that's it. You know your kids are growing up when the last training wheels (stabilizers to all of us from England) come off the bikes. My youngest learned to ride her bike last weekend. We do have legs that are black and blue from the experience but they will heal.
What I noticed most however, was her determination, she kept on going and going despite the blood and bruises. She decided that this was the day she was going to learn - and she did.
She didn't try to complete the Tour de France, she did little baby steps, she was just so happy to get 2 metres (well from the skipping rope to the skittle) without falling off or putting her feet down.
Kids can teach us so much!