Ok on machine quilting. When I start I bring the bottom thread up and start sewing. So can I cut these threads right off? (thats what I have been doing all along) or do they have to be buried? I use a locking stitch so just thought I could cut them right off. also when I end I just use the locking stitch and then cut the front off and the back off. Is this the correct way and will it be okay since Im using a locking stitch at the beginning and end.