Read your machine manuel. You need to know what extension to download, and it is so much easier to get the correct one to begin with. Some where is should say you need to use PEC or SEW or HUV or some thime like that. Then when you go to Annthegram and you pick a free design (lots of great ones) you will know which one to pick. Also you will need to know how to transfer between your computer and your sewing machine. Does it use a cable, a card or a USB flashdrive....they all seem to be different. Good Luck