Like a skipping motion or cap motion or the usual arms and shoulders moving in a circular motion back and forth. I did do the pin like you said and also have the IK "T" and "R" at 100% like the legs do by default. Is that what you are doing or are you just pinning the translate and rotation? Here are my settings whenever I…
How much rigging experience do you have? And how much time? I--personally, this is just my opinion!--would avoid Digital Tutors / Pluralsight unless you are in a pinch. The quadruped rig I made following their course worked, but was really awkward from an animator standpoint. I've learned much better ways to rig since…