perfectly understood (why I'm puttting grammar edits in a tiddler for future use)-- I'll let you in a secret... I'm a horrible English writer myself, on the grammar police Most Wanted list << >> :)
My spouse pointed out one thing about people that English is a second language for them-- they are much more careful and precise with their English than many native English speakers.
These weekly topics can be like notes for you, people can leave edit suggestions and you can refer back to them when the time is right
Keep up the effort-- I'm pretty confident it will be worth it