The Palestrina Knot is a lovely knot stitch. My stitch instructions have been done in a two thread but I think it would look much nicer in a three thread. It will make a great accent stitch on my crazy patch block. I will try my best to update during the week with the stitch added to said block.
So on with the photograph tutorial.
First things first, bring your thread up from underneath your work and make half a cross stitch. Bring your needle up from underneath again just below where you placed the top of your half stitch.
Wrap the thread over and under the stitch around and through that stitch again just above the other. Place the needle over the thread and pull through. This should make your first knot.
Then go on redoing the same process, working to the left until you have done the desired amount of knots.