Two things worth noting for the upper house (the big form):
1) Parties no longer get to say where your preferences go, whether you vote above or below the line. The only preferences that flow on are the ones you specifically mark. If you vote only a single "1" above the line, no preferences from you will flow on at all if that party doesn't get in.
2) The minimum number of preferences above the line is 1. The minimum below the line is 20.
(and for the vast majority of you who are not in Western Australia, enjoy some not-especially-depressing political info with no effect on your life)