This pattern took me some time to finish. I followed the same steps I took for the Rose pattern (check it here in Explore). In short I did several skulls in different colours and different angles to give a random effect, made the skulls in different sizes to give the sense of depth and built the pattern skull by skull until I have a big column that I could duplicate and won't give the feel of repetition. I did plenty of color variations that you can see in 2012 Work button. Enjoy!