A week out from appearing on the Europe team for a ninth time, Westwood posted a two-under-par 69 at the Wales Open to make the cut at Celtic Manor.
The Englishman, 41, is joined in Paul McGinley's team by Cup debutants Jamie Donaldson, Victor Dubuisson and Stephen Gallacher.
Westwood is hoping to use his experience in the prestigious team event to benefit the less-experienced trio.
"We've discussed the possibility of me being paired with the rookies. Hopefully I will be a mentor to some of the new guys," Westwood said.
"That's what I've tried to do over the last few [tournaments] really. That's what the experienced players have to do.
"Nick [Faldo, former Europe captain and team-mate] just told me to try to enjoy it [on Westwood's Ryder Cup debut] - play aggressively, don't worry about things too much and he'd be there if I messed up. He didn't say messed up but that was what he implied.
"They are going to be nervous no matter what, but you've just got to try to make them feel a bit more comfortable and tell them everybody's feeling those nerves.
"At the end of the day it's just another round of golf."
Westwood recalled his first Ryder Cup experience, in which Europe claimed a thrilling 14 1/12 to 13 1/2 victory in 1997 at Valderrama Golf Club in Spain.
"At that time, I was 24 years old and I was sat in a room with Bernhard Langer, Seve Ballesteros, Nick Faldo - all my heroes I had watched growing up - and they were all jumping about like schoolboys because they had won the Ryder Cup," Westwood said.
"We had Prince Andrew in the team room too. It was my first experience of it and you don't really know how to behave. It didn't take me long to get into it."
Westwood has been on the winning team in six of his eight appearances in the biennial event.
"The first couple of times you play it all goes past you in a blur. It all happens so fast you don't really recognise everything that's happening. But when it gets to six, seven, eight you can slow down and take it all in," he said.
"It's a privileged experience to go through. And the more you play in them, the more you take it all in and enjoy it."