I think you have a decent, workmanlike grasp of the English language for a non-native speaker. I'm not sure what your writing would be like in your own tongue, but I suspect it would be much the same. Now for the brutal honesty. I find your writing dry, flatly declarative and stilted, especially for a work of fiction, especially when the underlying theme has the potential to be atmospheric and evocative. I also find your sentence structure immature and awkward. You didn't say what your goals are, and I don't mean to be harsh, but if you are serious about writing fiction I would encourage you to enroll in some creative writing courses to develop your craft. Adding some poetry classes to the mix might loosen you up too, as well as anything nonliterary that sharpens your observational skills and feeds your imagination. Good luck, and whatever you do, try to enjoy it.