### Image Design Breakdown (Modified)

- **Background:**
  - Change the sky to a sunset gradient ranging from orange to pink.
  - Replace the blue with soft lavender nuances.

- **Sun:**
  - Alter the sun to a crescent moon in a pale blue shade.

- **Clouds:**
  - Change the cloud shapes to fluffy, cumulus clouds with a slightly darker grey color.

- **Mountains:**
  - Transform the mountains into rolling hills with a patchwork texture.

- **River:**
  - Modify the river to meander in a zigzag pattern and fill it with a turquoise color.

- **Foreground:**
  - Add wildflowers in multiple colors (yellow, red, and purple) scattered across the grassy area.

- **Details:**
  - Introduce a small wooden footbridge over the river for added interest. 

This design preserves a serene landscape but introduces fresh elements for a new feel.