I can see absolutely nothing on that picture. Please post a screenshot of your object, your UV layout, and paintstrokes that are distinguishable from the background.
In Maya there is something called Orient to edges, it's found in the UV toolkit, in the Arrange and Layout tab. You select the edge then press the button and magic happens.
I think that's just a basic layout, and that he's going to add staticmeshes and details once the gameplay will be tweaked properly. I'll give it a try man