Hi everyone

I am currently on course to finish Fundamentals 2 and so far it has been going smoothly. I can transition well between most chords but my strumming is a bit rusty. It can sound amazing at times and really bad during other times. I cant see any strumming based lessons to improve upon this. Is this covered in any of the lessons post Fundamentals 2 or am i missing something ?

Any Advice would be helpful. Thanks