ok so i have a head and I want to mirror just this one eye...how do i do that? and how do you like mirror period?

Huh? To mirror eyes, I just cope, paste, and flip.
If you wanna mirror the eye but keep the shading then do the same thing, but you probably have to ramake the shading.

copy and paste? how you do that?

Bam. <= Instead of search function just google "[what you're looking for] site:forum.toribash.com"

I already got two eyes now... ok so now how do i make them look different ways? both of them are looking to the right?

Flip them, Look for a tool that says rotate the whatever vertical then click on your selection (Sorry if im wrong, i use gimp)

I use gimp too and now i have both how do i flip one?

On the top do "layer > transform > flip horizontal" on the eye you want to flip if you're in GIMP. I can't remember for PS at the moment.

Dont select both, only select one or else your going to make the eyes look the same way still if you flip it.
Just box select one eye and flip it

There's also a tool that looks like a folded piece of paper.