Tiled landscapes are awful to look at the farther away you are. Adding variation to the texture using macro variation, noise, and distance can really help break up the monotony in the landscape layer.
Contents of this video:
0:00 - intro
0:57 - Project Creation
1:55 - Landscape
3:40 - Quixel Bridge
5:57 - Material Setup
8:34 - Layer Painting
11:48 - Color Variations
33:34 - Pixel Depth
46:04 - Normals
51:02 - Material Instance
52:41 - Conclusion