To find a fresh perspective any photographer should know the great photographers who have come before and laid the groundwork for what successful photographs. Some of the great landscape photographers are Ansel Adams, Eliot Porter, to William Henry Jackson to Max Rive, Mandy Lea, and Valda Bailey to name a few. There is a much longer list of very accomplished and talented image-makers whose work is outstanding and should be reviewed.
If you are photographing nature, try to make the photograph uniqly yours. In a world inundated with photographs, where almost everyone is a photographer, the challenge is what does your world look like standing in your position in this very moment. No one else can have that perspective except for you!