 So you got your UVs but you don't know what the next step is, not a problem. Generally to get the most out of your materials I recommend you bake your textures. To do that you go to the right next to the layers, go to texture settings, bake mesh maps. I usually get better results when I turn ID off and bake selected textures, you're done. From here you can drag any material you need straight to your object and substance will automatically make it look good for you. Hope that helps and as always I hope you have a fantastic day and I'll see you around.