Right, there are two ways of creating the wedge as skier31 says.
--Rotating the skis around the arch of the foot, which does not widen the stance and leads to a very narrow gliding wedge
--Brushing/stepping/hopping the tails out with the pivot point forward towards the tip, which does widen the stance and leads to a wide wedge. Combine these two with keeping the skis parallel and you have three stances to work with.
What you've got is a perfect start to guided discovery teaching/learning. Initiate out of each of these and see what happens.
How to initiate a turn is another issue, with many options as well.
--outside ski focus: brush the tail of the new outside ski outward; edge the new outside ski more; transfer weight to the outside ski/stand on it
--inside ski focus: lighten it, lift its tail, lift it totally; tip it to the little toe edge with ankle action, flatten it by moving upper body over it, go bowlegged to flatten it; pull it back (being careful not to pull back the hip/side of body above it!)
--two-legged focus: shorten one leg while lengthening the other, as in riding a bicycle
--hip focus: shift the new inside hip forward, along with the new inside shoulder, arm, elbow, and hand
--whole body focus: turn and look in the direction you want to go
I have a long list of these; this is what I can think of right now.