I am completely new to machine embroidery and am having an awful time with my design "moving" under the hoop. The design will stitch out fine and then the black outline will start stitching like the hoop has been moved. The hoop screws seem to be supertight - not sure if I'm pulling fabric too tight or too loose, but I'm hoping someone can offer a Hooping 101 lesson? Any help would be greatly appreciated, as I have all kinds of ideas for Christmas presents on my new machine ... if only I knew how to use it! Thanks in advance for any guidance you might be able to offer.