[quote=Prince]
It's not that complex. The jutsu materializes the Shadow. In the past, the materialized shadow has been abused to be a myriad of things, ranging from essentially turning a forest into a living death trap of shadows. I limit the jutsu by stating that A) the only shadow that can be turned into Shadow Tendrils is that of the user and what thy extend to B) that all shadow tendrils in corporeal form can be hurt C) that the tendrils are limited as you said, but also cannot move from their origin point once summoned. They must retreat, then reposition if need be.
[/quote]

Whomever didn't enforce the first two is silly. Nara can only use their shadows. The only advantage they get to being in a shadow themselves is extra range. 

So, the takeaway is that the moment the shadow leaves the ground in terms of Shadow Sewing it is locked into that 'base point', which mandates the original extension of the shadow to the base point and can only adjust however many tendrils I make up to the total volume of the shadow? Could I then flatten a shadow tendril back onto the ground (normal Imitation) in lieu of having it retreat?

What I am imagining is I extend my shadow to say 10 feet away and then thrust out three tendrils at an opponent. One directly at them, the other two the sides. If they moved before the shadow could make contact with them, could I have the, lets say 10 foot tendrils 'fall' back to the ground and now have a total distance of 20 feet on my original extension in three locations? Kind of like a Y with an extension on the stem straight through the fork?

I may actually scrap the character largely. Kaku has a sister and I just had an idea for her. She may be more interesting.