I am an American writer currently working as an English instructor in Krakow, Poland. As an expatriate, I see silly errors in English every single day on items such as menus, advertisements and clothing. Sometimes they are minor but sometimes they are confusing or even worse, hilarious. If you are going to invest the money to reach an English speaking audience, it is dire to do it correctly. I have found that even the strongest non-native English speakers have difficulty with things that native speakers do not.
I am a trained gramma