When you get your new sewing machine, it is best to go through the manual and explore what your machine can do. Just the other day I consulted mine, after I’ve had my Bernina since 2016, and realised that I have been threading my machine all wrong. Not that I have not consulted the manual before but I haven’t taken much note on that.
Its not just small things like that, but its also general maintenance i.e. oiling and dealing with dust to keep your machine working perfectly.
What was your misdemeanour?