There are many Yuna models out there, but this is mine.

It can generally get the character allright, but you might want to add:

yuna
short braid
heterochromia
blue eye, green eye

to make your life a little easier.

It can tell the final fantasy x from it's x-2 counterpart:

Shorts -> will default to x-2
Yukata -> will push to x

Let me know if you like it!