Walker, 28, has been deployed as part of a back three during England's preparations for this summer's competition.
The Manchester City defender is widely being tipped to play at centre-back during the tournament, and he is prepared to operate in that position despite it being far from his first choice.
"If you ask me where do I want to play, of course I want to play right-back," Walker told PA. "I've worked my whole career to prove to myself that I can be the best in the world in my position.
"I feel like showcasing that at the World Cup would probably get me there but it's about whatever I need to do for the team. If the gaffer feels me playing at right centre-half is beneficial to the team then why not? It's still a relatively new experience for me, but it's new tools in my toolbox.
"As long as I'm on the field that's the main thing. If the gaffer feels I will improve the team playing there, I'm all for that."
England will open their Group G campaign against Tunisia on June 18, before also taking on Panama and Belgium as they bid to make the knockout rounds.