The Arsenal youngster scored three goals in the match.
Walcott said: “There were 11 stars, the whole team were stars today.
“We showed everyone how strong we are as a unit. We proved it tonight, it was brilliant.”
He added: “The first two goals were similar.
“I tend to cross those a lot but thought I’d be a bit more greedy this time. For the second goal, it was a great ball by Wayne Rooney.
“You’ve always got to put 100% in. I’m grateful Fabio Capello has given me the opportunity.
“I’ve got to take that forward now and keep on improving.”