The Holland international told ITV: "It is always nice to score, especially at Wembley. I am ready glad for everyone.
"Last year I did not score too many headers, so I have to improve on that.
"We have got Wilfried Zaha, who is doing really well. I believe in this team, we are the champions.
"I cannot explain us being third favourites for the title. We will compete again."
“The former Arsenal striker had earlier told the Wembley crowd: 'We have a chance to win five trophies this year and we want then all'."