I have a machine very similar to yours but on the top is a little door that you open and put in cams that are the decorative stitches. I have the book for mine if there are any questions that you have. I am pretty sure that somebody posted a picture of their machine that looked just like yours. I will see if I can find that post.
Yes, here it is:
http://www.quiltingboard.com/t-59689-1.htm