1. I would think they mean 6 1024x1024 textures, but if you're worried about it just ask them. 2. Really texture density is pretty simple, if you know you need to have 1024 per 3 meters, just model some modular chucks that are 3x3 meters large or smaller, and map your 1024 to that. or you know, 4 peices that are 1.5x1.5m…