Landscape material is repeating...

Hello folks. I hope someone of you can help me.
During painting in landscape layers I got the problem that my materials are repeating which doesn’t look good at all.
Some advices how I can fix it?

Picture:

Ok I have Solution for that,

Reffer Picture Attached to

Take Random Noice Textures Scale them in different sizes and place them on top of another,
and add them back into your original texture.

Also see txt file …Simply copy all the text from it to your material editor all nodes will appear there.

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