in order to do this is quit simple make a justu wow easy
dont make any tht couldnt be on naruto ever
in order to make 1 u must do the following
name
type
signs (not nesscary)
how does it hit
color(if it has 1)
characters tht can learn on show(not nesscary
description
name: amanodel
type: uh the illusion kind
signs: tiger, bird, dog, boar, hare(or rabbit), dragon
touch
color: none
characters tht can learn on show: grandma syunade, girya, orichimaru, (and ofcourse) kakashi hataki
description: when make contact to opnent it makes them fit in where ever but it clouds the mind. so per say u use it on a rat in a castle it would look like some commoner. or another might be its in a cave with lots of bats it would look like a bat.