For the first technique, it seems useful as you could sayyyy make a bunch of little butterflies and send them to your opponent, blinding them and hindering their vision. Or, you could make like a rhino or something and have it smash into them with brute force.
I have a few questions. I have looked over the paper jutsu list many times, and for this particular technique, it says "After using body of paper jutsu". However, I have never seen that move on the paper jutsu list. Also, I have seen some that say after activating your wings, but see no techniques that says you activate your wings. Are these supposed to be done freeform, or are there techniques I do not know about? Also, with this specific technique, with the big animals, can they be as big as a rhino, as I have stated? Or something on a smaller scale? When I imagine the small, medium and large paper constructs, I think of something as small as butterflies, when it comes to medium, I think of a cat or a dog, and with big, I think of a rhino or horse, etc.
For the second jutsu, it looks cool as you can count them as razor sharp shuriken but better, since they are chakra infused. This technique is nice because it is a projectile attack, meaning you can send it out and perform something else right behind it.