"I would not be concerned,except that in Chunyi Lin's Level 1, he directs the student not to mix qigong methods."
This is true, it is best to focus on one, not good to do two different ones in close proximity, as your body assimulates a specific energy pattern relative to each exercise. In close proximity you would waste alot of energy adjusting to the change in pattern. Jovo gave the appropriate answer if you do want to try a few things out or if you are in a transition period.
