I would second Gillian's point about writing it in your own language.

If you want to write in English, you have to really know English.

I don't say this to be insulting. I say it because editors and publishers have a great many manuscripts sent to them, and they have to decide which ones are worth publishing. There is a lot of pressure on them, and not much time. So, rather than read every single submission from start to finish, they will look for excuses to reject manuscripts.

Sometimes the editor or publisher will flick through a few pages to check if the author is using the correct form of "its" or "it's", and might reject the manuscript for that reason.