In my humble opinion, what you are doing at nine month is definitely huge. we like! high five! as far as "how" you are doing "what" you are doing, I would advise an emphases on fun! I know you were making the vid... whatever! if you aren't having fun, what's the point! and if you are having fun...then why can't I see that you are having fun...hmmm?
but, still awesome!
as for the standing still thing (and this is where I tend to piss folks off) I find (personally) that the distinction between Contact juggling and Sphereplay is the movement. when you see a CJ performance it tends to look static and generally like the "artist" has spent lots of time "practicing". whereas, when you see a Sphereplay show, what you tend to see is a person "engaged with an object" and, like all good engagements should, eventually, this leads to a marriage. A point at which the two merge and there is just one. The movement. The dance.
also, the "they can't see the sphere" issue is easily solved with bigger spheres!

So no offense meant to anyone! But think less and play more. As Yoda says "do, or do not, there is no try"