Spurs outclassed West Ham 3-0 on Saturday via goals from Pape Matar Sarr, Lucas Bergvall and Micky van de Ven.
Walker-Peters later said, “We had some good chances, made good decisions, and just didn't put the ball in the back of the net. In the end, we were punished for that, and that just shows the level that we’re playing at.
“In the Premier League, you have to be ruthless when you get opportunities, because it’s hard to get those openings, and teams make you pay, like Spurs have done today.
“We need to go away and analyse the goals. It (set-pieces) is something we’ve been really working on, so we have to look at that and improve for the next game.
“We also need to make sure we dust ourselves down quickly after we concede goals, stay focused and keep ourselves in the game. We’ve got things to look at, but in the end I think today just wasn’t meant for us.”