The best art about shimmies is LAYERING! I love the challenge of the layering technique and combos. Remember that with Egyptian shimmies, the most important thing is that your feet must be flat and your hips should never be engaged, ever... I don't care what anyone else says :) I see too many of my students that have taken other classes swing their hips up and down as they shimmy, avoid it if you want to be able to layer your shimmies. Check out the different ways you could layer the Egyptian shimmy in these videos.
PART 1: LAYERING WITH ARMS AND HANDS
PART 2: LAYERING WITH HIPS AND UPPER BODY