be carefull there mate, working to a grid is par for the course in Environment art, suggesting it can simply be ignored is pretty bad advice. making environments usually requires alot of modular work, which works much more smoothly when created on a grid. here's some good stuff to look at…
i got that :) thanks for the tips...i'm registered to 3dm and loved the tutorial. As said i need a more organic workflow with a lot of sculpting etc... :)