Oh my goodness! I'm fairly new to quilting and before that a very infrequent machine stitcher. I've been using 90/14's for everything...piecing, quilting, clothing alterations...how do you determine what size needle you should be using for various projects/fabrics? I know there are no police, but I'd like to know what the general needle guidelines are. Can you help, please? (of course you can...this board helps with EVERYTHING!)