When doing turns either way, your weight should shift to your forward foot (if it's not already there). I don't know if it's strictly good form or not, but one thing that really helps is to shift your lead shoulder slightly in the direction you want to turn. This forces your front foot to pressure the inside edge which initiates the turn.
If Snowolf comes on, he'll give you lots more detail, but the basic idea is: ruddering, bad.
Coffee is your friend. Everyone else is an acquaintance.