My mesh turned invinsible after I applied my own material

I was doing my own grass material
I did in blender a plane mesh and exported it as .FBX to UE4. Then I did grass material from a photo of real grass (.PNG file). When I wanted to apply the material on the mesh, it turned invinsible. I dont know what is wrong, maybe my blueprint.

Thanks for any response.

That’s probably an issue with UV mapping, apply another material that has a texture and see what it looks like. Typically if you make a planar mesh it should just have UV mapping by default that fits the full UV space for a texture.