I recently purchased a Brother SE600 embroidery machine and am having issues with actually embroidering. I think I do not have the correct supplies, and need some guidance. I have 75/11 and 90/14 needles, 40W thread, using sketch paper as a stabilizer, and primarily want to embroider on jersey. Do I have the correct supplies? Everytime I attempt to embroider, thread is bunching together in the bobbin case and the machine says to rethread the upper threads. Please help! I want to get embroidering.