First off, you're English is doing just fine so far. Second by blurred do you mean one map for the dm and one map that is not correct for the players? Third, a lot of people use pattern overlays for grass and you can find those types of things in the Mapping Elements or Mapping Resources sections. Fourth, if you want to give it a try yourself then break out the extra brushes that come with PS and look for one called "scattered dry brush"...I use that one all of the time on satellite style maps. If you are trying to draw them by hand then you might want to look for the brushes in the Elements section and see how we do our stuff so that you can learn to emulate that. Lastly, try out the tutorials in the Tutorial section and you will be rolling in no time flat. Okay, well, maybe a day or two.