Streaks left

Hey, I am having issues with streaks being left all of the sudden.

I know it can be a lot of things but does my rubber look ok? I’m pretty new. About 15 jobs in.

I’m doing something wrong though for sure.

Any help would be welcomed.

welcome Tiber… can you expand on what type of trouble you are experiencing? Are there ghost lines on the edges of your squeegee when you are fanning? Are there trailing lines in the middle ? Are you straight pulling or fanning (s type) method?