Prasarita Padottanasana (Wide Stance Forward Fold): Study Points

Let's study Prasarita Padottanasana (Wide Stance Forward Fold Pose) this month! 

Here are some Study Points for you.  Feel free to add more ideas in the comments. 
You can also add your responses to these points:

1. How do you rest on your feet?  Toward the outside edge?  Inside?  Front?  Back?
2. Can you get longer in the spine?
3. Play with engaging the core.  How does that change how you feel in the pose?
4. Play with the position of the shoulder blades.  How does that change how your heart feels?

If you are a teacher, challenge yourself to teach this pose in each class this month.  Can you find something new to teach (and learn)?