Sorry it took so long for me to get around to watching your routine...but, I liked it! Especially the last part, three balls to square sponge.
I'm not a magician, so please don't take any criticism from me seriously, lol. The only thing I would change is maybe showing your spectator that the silver cups are empty at the beginning of your routine.
"No actually, this is a black stick with two white ends on it".