The 22-year-old Edinburgh winger has only won two caps, both as a replacement, but he has been promoted to the first XV for the arrival of the world champions at Murrayfield.
Webster is relishing the opportunity to take on the best team on the planet and he is hoping that his young team-mates are feeling just as confident.
"There are young guys in this team and it can go two ways," said Webster.
"You can be in awe of the whole event or be more excited about things.
"We are quite young but we are taking on a team like England who are beatable. They are very good but nobody is invincible and it's more exciting having the chance to take them on.
"We will go out there and do our best and we will see where that takes us. You can't let the occasion get to you and you have to concentrate on what you are doing.
"There are 60,000 people watching but they can't influence what's happening on the pitch."
Webster is in a good position to give advice as he was a team-mate of England winger Ben Cohen at Northampton.
He continued: "I was at Northampton for nearly three years working with Ben so I've got a lot of respect for them.
"They are really good players so it's going to be tough, but that's where you want to mark yourself.
"They are doing really well so it's going to be nice playing against them. You can see where you are next to them.
"I am just looking forward to it. They are good players but I'm just going to concentrate on what I'm doing at the weekend rather than what they are doing.
"It's not like a club game when you might turn up against your opposition and never have really seen them before.
"I know [Cohen's] game pretty well because I have played with him but, call it professional curiosity, you are always watching what other guys are doing on the pitch.
"With wingers you watch how they play the game so at this level you know a lot about the opposition before you even play against them."
Webster and Jason White have been elevated to the starting line-up after impressing against Wales last week and he believes that starting has got to be easier than being on the bench.
"It's fantastic," enthused Webster. "It's an achievement for any professional. I've been working really hard for a long time so I am really chuffed to get the nod.
"I am really excited about it and it's going to be a great occasion."