Wow, you ski at Stevens too. When are you moving back to Montana?
What is your skiing background? How much coaching have you received in the past. What level of coaching/teaching have you been 'subjected' to?
I assume by 'rotate' you mean using your upperbod for turning force. If I am wrong...oh well.
The goal: to develop a "strong inside half" of the body (hand/shoulder/hip/knee/foot). Natural forces give the outside half plenty of drive. When we keep the inside half strong the whole body goes together,in balance.
Skate at the course/turn. Lead through the first turn with your inside shoulder. Once through, square up with the next turn, then lead through with your inside shoulder.
This should not lead to a twisted position, but merely keep your outside from getting ahead or inside from falling behind.
Keep the turn/square-up/turn rhythm until you begin to feel some benefits, then work on smoothing it all together without the separations in timing.
Once this comes together, work the 'leading' into a more dynamic 'driving' feel.
I'm not sure how it would work on flats while skating through turns, but on a hill of any pitch or a section of speedy-non-skating turns it will work well.
As for stepping. I am not sure what you mean, as there are many steps and many different things people call "stepping my turns."
Here are a couple goals which can help with all sorts of stepping.
Goal: Maintain equal/similar "edge" angles through turns and especially transitions from turn-to-turn.
Goal: Develop a "legs crossing under" the body through transitions instead of a "body crossing over" the legs.
If you like this stuff I can try to get more specific. If it is too talky or in some other way insufficient for your use let me know and I will cease the feedback.