I didn't want to do the same Irises that were supplied as I intend to make a pattern from this for my portfolio. I found this class very helpful as half my battle with creating watercolours in the past, was knowing which brushes to use. It also clarified things for me with regard to creating separate layers for the different petals and elements. What I don't know however, is how do I export the file ready for use in Illustrator with the watercolour paper background but keep it as a PNG?