I managed to get the cobblestones to blend in with the Landscape material so that I have a feint path showing through to add in a bit more depth to the world.
It would help if you could post up your concept. If your concept is a huge landscape or a huge industrial complex the practical advice would be different.
idrawgirls.com posts a few tutorials a day, mostly characters, but sometimes environments. Here's a few http://idrawgirls.com/tutorials/category/painting-tutorials/paint-landscape/
Thanks everyone i took the critics onboard and i will be re-doing some texture, i will also bring it in ue4 for a bigger environment scene. Started on the landscape in ue4.
This is the first time I tried landscape on this computer to be honest, so I don't know. Other than that though, the engine works fine as far as I can tell.