Hello Gabi and Wilkommen.
On a global scale we live pretty close to each other, I am in the Netherlands.
The more you write and read, the better you will get in writing in English so just go on an practice! There is an edit button that you can use for a limited amount of time. I use it quite often as for a strange reason I often only spot some mistakes when I read my entries back in black. Maybe because there is more space between the lines an the colour is different?