Can I just sit with you and watch and have you give me lessons?
LOL, sure! C'mon over, I'll put the kettle on
I suppose I could put up a tute, but I've seen one around on Craftster somewhere that was pretty good! Basically it comes down to tension -- yours and the machines LOL Decorative stitching like satin stitch has a totally different (usually much lower) tension than a regular stitch -- unlike everyone else, I recommend sewing with a different colour bobbin thread so you can check your work. If you're at the right tension, if you flip it to the wrong side you should see the top thread coming through on both sides of the bobbin thread, and there should be no bobbin thread viewable on the top (this is why it shouldn't matter what colour your bobbin is). If you can see your bobbin thread on the top, the tension is too high and your stitching won't look smooth (plus you'll shred any decorative threads like metallics and some rayons)
And YOU have to relax -- Zen and the Art of Satin Stitch, LOL Remember sewing a smooth, continuous curve requires a smooth, continuous turning under the presser foot --- if you stop and turn your work, even a tiny bit, you'll get a kink in the curve. And DON'T push the fabric --- the feed dogs will do their job, you just chill out and don't get impatient.
Other than that it's just practice, really
Some of you have seen my other projects, you know I put that Love Knot on everything
Thanks again for all the nice compliments!!!!