

In a newbie - any help is greatly advised
I’ve attached a photo for example purposes.
Machine/ Brother NV880e
I sat for around 10 hours last week, doing a test stitch of every tension from 2.6 - 5 in my machine. I can not for the life of me, figure out why my bobbin is showing on top.
I’ve finally got the backs of the stitch looking ok. I’m using a thin shirt fabric and doubling up on ‘invisible’ mesh stabiliser on the back. This is happening with every design I do.
I have changed from self winding bobbins to brotherhead prewound bobbins. I have cleaned the bobbin holder, tried adjusting the bobbin tension so it falls down when holding it in your hand with a tug, but smoothly falls none the less. This happens on any fabric. Please please help as I have literally followed every tutorial and manual and I still can’t get it right 😭
Just a note, I have also tried a tear away stabiliser but to which was no different either & I have tried 3 different needle types. I can also post example photos of satin stitches that I did last week but this is the example from this morning.
3 tension so the best, but it’s still pulling quite significantly