Hi, I'm a beginner at sewing and I bought a mini machine to tide me over until I buy a proper one. Now here's my question: I was always taught years ago in school to secure stitches at the beginning and end with a back stitch. However on my mini sewing machine from hobbycraft I don't think there is a backstitch. There also isn't the option to change stitch sizes. So what do I do? Thanks :)