Estevao came off the bench to grab an injury-time winner against Liverpool on Saturday.
Caicedo also struck on the night and said of his young teammate: "It was a great feeling when Estevao scored. He is doing a great job here and we are so happy to have him here.
"You can see on the pitch he is so good, it’s the same in training. He is showing his quality. We try to help him because the Premier League is so difficult. He is having an impact."
Caicedo added, "It was a great day for the club. The fans were amazing. We appreciate that because they push us and it was important for us to win the game.
"This is a result to build on. We showed our quality and our character on the pitch. This win can give us a lot of confidence for the rest of the season."