Fati says he's desperate to take advantage of every opportunity he gets at Barcelona.
"Every chance I get, I try to make the most of it," Ansu Fati said after the game.
"When a striker scores he always wants more.
"Jordi Alba's pass was very good so I just had to help it in."
Despite being in the first team for a year now, the novelty of playing alongside Lionel Messi hasn't yet worn off.
"Playing with Messi is a dream," Fati added.
"I had that dream since I was a child and now I'm living it."
Ronald Koeman said after the match that the Spaniard had a big future ahead of him, but the teenager knows that'll only come from work.
"What I want is to keep improving every day and to keep learning from my colleagues," Fati said.
"They're trying their best to help me every day."