I think you're off to a fine start. The satellite look you have for your land looks great, and I think the clouds go a long way making it look like a real place.

You mentioned your mountains, and I agree, they look maybe a bit more fuzzy rather than rocky (... and you were apologizing for your English! ) What software are you using? If you're working with PS, I think this beauty could be worth checking out if you haven't already, in order to get some new ideas on how to possibly approach this type satellite style map. I know I recommend this tutorial to everyone and their mother, but it is Guild classic for a reason. It's just a fantastic resource to have in your bag of tricks.

Oh, and welcome to the Guild!