Janome 6600, Mode 2, D01, 3.5,0.00, pressure 1, tension 7, feed dogs down, foot pedal unplugged, speed notch is under the middle speed-the arrow on the right in the set of 2 arrows.
I hit start, let it make a couple of stitches in place, and then begin to move the practice sandwich. Finding hand speed slow and in balance with machine speed affects the size of the stitches. Making long lines. When no eyelashes, I try curves. When no eyelashes on curves I go for a charity quilt etc. I practice with a different color bobbin from top thread so I can see which thread is creating issues if there are any issues.
I changed from Wal Mart thread to a R. Anston thread that came with my Janome and all the issues disappeared. I don't know if it was the thread or if by then I was doing something right, but the C&C all purpose kept breaking and shredding on top and that was something I had never experienced. I love this R.Anston thread. Can't remember what the R....word is. 100% cotton 50 wt.
I change settings with thicker batting. I am using warm & natural today.