She says that all they have to do against Australia at the Premadasa Stadium on Sunday is keep their nerve and continue to do what they do best.
"We just need to keep doing the same, the basics well, and keep it as simple as possible tomorrow," said opening batsman Edwards. "We all know it's a World Cup final. But if we do that, we know we can win this trophy."
England, inaugural winners of this tournament at Lord's in 2009, fell short when it was held again in the Caribbean two years ago - when Australia beat New Zealand in the Barbados final.
"That was a really disappointing tournament for us, and I'm really proud of the way the girls have come back - and I hope we're peaking at the right time," added Edwards.
Australia fast bowler Elysse Perry proved how dangerous she can be when she saw off West Indies' two most dangerous players, on the way to a comfortable semi-final win on Friday.
But Edwards believes England can deal with that threat, and others, adding: "She bowled four overs against us the other day, and went for 42. We look to attack in the powerplay.
"We have an approach to the game that really works...and we won't be changing that because of a World Cup final.
"We back ourselves against anyone in the world, and it's even more important we back ourselves tomorrow.
"I hope the girls will go and show everyone how good they are."