Custom Block Model and Texture

So ive created a custom block model.

But I cant get it to work properly. 

when I export it from blockbench as a json file and put it into mccreator it doesnt put my custom model and texture in minecraft its just a big black and purple block. 

When I export it from blockbench as an obj file and put it into mccreator it has the right custom model, but no texture applied to it, so its still black and purple. 

What am I doing wrong, please help :)