Preferred language for changeset descriptions, comments, etc. is English, because OpenStreetMap is an international project
I also speak Dutch and can read German if you are more comfortable with those, you can always ask me to translate when something is unclear
If I make a mistake, or you have a question why I mapped something in a certain way, please let me know! Of course, I try not to make mistakes and it seems I’m mostly doing okay, but I’m always open to feedback :)
Mapping requests are also welcome. I sometimes wonder what is most important or impactful to map, so if you have a direct purpose for any type of map data then that would be good to know!