i just finishing outline quilting a queen size sunflower quilt on my sewing machine, I lengthened my stitches to 4 and tension to 5.6 and it stitched well. Sewed all my straight lines first and then the blocks. It helps that I have a good size sewing table and set it against the wall so it doesn't hang over and pull . Wearing quilting gloves also helps with control
Of course it was all basted first when i started