If you can drop the feed dogs make sure you practice--a lot--on scrap quilt sandwiches that are similar in composition to your real quilt before actually putting a quilt you love into the machine. The first time I tried this I ended up with a huge mess and went back to "stitch in the ditch" for years before trying it again. And remember that unlike a professional quilting machine which will pause and adjust for speed, a sewing machine just keeps going if your foot stays on the pedal, even if you stop moving the quilt--all the stitches will clump together and make a giant mess if you don't keep moving the quilt consistently.