you dont udnerstand. the sun logo on his hand is yang power. it breathes life. through that 'sun', he releases yang power. he himself stated that he took some of kakashi's part (could be cell). naruto did exactly the same to kakashi, like chouji does to his body. chouji uses uses yang release on his body and let it expand, so it becomes bigger. naruto breathes yang release, and let the cell of kakashi's eye expand till it became a whole eye.
but sharingan, is a KG. and naruto can not create something like that. yang power doesnt create physical form from nothingness. but yin power does. (for example, shika's kagemane, hagoromo's power when he created bijuu). which means sasuke can do that, with that moon logo.
dont you get it? sasuke had been saying he wanted to restore his clan. not literally restore it by creating people with sharingan and name it 'UCHIHA'. but from that vision (and he is also naruto's opposite), sasuke is said to be yin (and naruto is yang). and yin, like i said above, yin's ability is to create physical form from nothingness. a bit similar to sasuke's vision, creating the new uchiha, the new system.