How to make a smooth custom material transition

[Turt1eToaster (TurtleToaster)]

Not sure if this is the wrong category but I couldn’t find anything related to this topic.
What I’m looking for is how to make a smoother transition with my custom materials using roblox terrain.

You can see here how the default textures have a very soft and seamless transition at the edges

While my custom made texture has very sharp edges which looks unrealistic

Any kind of help would be appreciated

[SubtotalAnt8185]

It depends on the BaseMaterial property.

[Aerophagia]

Your NormalMap on your custom materials will determine how they blend together. Neither of your materials have a Normal Map
and also what subtotalaint said, some materials do have built in presets with how they interact with other materials (such as cobblestone & rock)