Nico Paz was delighted to make his Real Madrid debut this week.
The midfielder was a late substitute in the Champions League win against Braga.
Paz, 19, said, "You always have nerves before the game.
"I have tried to be calm and enjoy as much as possible. As soon as I left the bench and saw the stadium, my stomach was removed. You come upstairs with all the people. It is amazing to be next to my idols."
On what coach Carlo Ancelotti told him before he went on, Paz added: "He said 'Jump into the field, do what you know and enjoy'."