They say that free motion embroidery is "painting" with your thread on a sewing machine. You make a design and make the design come to life using the sewing machine.
The below picture doesn't do justice to the thread colours. I first drew my design on the cloth using a water soluble marker and did the embroidery on top of my drawing.
I have used various thread types. It does take time and a LOT of thread to get it done, but it is fun to do if you don't mind changing the threads multiple times :-).