Hi Jan,
I am unfamiliar with Vikings, so I can't help you with that.
I can suggest that you watch the free-motion instruction video on the TQS website.
You can find it under the "Watch" tab at the top of the page.
Select "Featured Guest DVD's. It looks very useful to beginning free-motion stitchers.
In my experience, t takes time and lots of practice to become really good at free-motion stitching.
Always test your thread and free-motion stitching on a sample of the same fabric, batting, thread and machine settings, before stitching on your main quilt project.
Stick with it. You can do it!
Judy