I think he did very well on his debut.
I wanted to mention one thing about the little piece of skill he did a couple of times through the game. I'm sure others know what I'm talking about here - he's defending a YB lad when the ball comes towards them and he lets the ball run across a little bit before he dinks it with his "back" leg into that little bit of space. Now, it's an isolated piece of skill and should be treated as such but what it indicated was an awareness and understanding of space around him and the technique and confidence to act on it. As was seen during the game, he would dink it into open space and since it was intentional, he would change his body shape towards the ball, leaving the YB player in the wrong position, and being free from danger ready to capitalize.
Very encouraging for a very young lad making his debut.