Thanks for your hints, yeah I knew that with the language. Actually I had someone reading over it (he said he was a native english speaker, but I begin to doubt that).
As for the renders, this is a lack of experience. If I remeber correctly, I did it with lights in the first renders, but then I got hard problems with reflection of some props and scenes, so in the end I let them out. But if I begin to render again, I am sure I'll try them again
