Every machine runs a little bit different depending on the operator. Relax and practice, practice, practice! With practice you will find what works with your machine. Make sure you have the correct needle for your machine and that it is inserted correctly, use a strong thread (most machines do like a poly thread, a cotton wrapped poly or a poly wrapped cotton -my machine prefers A&E Perma Core) A cotton thread just does not have the strength to stand up to the speeds these machines run. Take your time and enjoy the process!!