I honestly have no idea because I have never bred, but I have been thinking about it a lot. I decided that a good place to start would be to get some baby female colour morphs. I ideally wanted to start with a butter or lesser, because I love the look of them, but was offered a pewter (cinny pastel) at a great price and couldn't turn it down. I figured with a couple of colour morph females I could get some pattern morph or pattern/colour morph males. I was thinking in a year I would get a bumblebee male to put to my pewter when she is old enough, I love the combos that come from that pairing. I could play on this all day: http://www.worldofballpythons.com/wizard/
I think the idea is to have females with fewer morph genes and get the multi gene morphs in the males, since you can put him to more than one female.