o.0
these are very bad
all you've done is swap heads and recolour, and even after that some of the heads are too small on the "adult" bodies
1/10
The only decent things are the beasts at the bottom and i've no idea how your going to add them into it, however they also look like simple recolours
A few people have done what your going to and it became boring quickly due to simple edits and bad storylines
so unless you do something unusual or amazing, it wont work
compared to the gaara spritesheet you made, these look like absolutely no effort has gone into them. I suggest you redo them and make some unique characters rather than plain head transplants and recolours. Its seems very noobish