Super Smash Bros. Ultimate Ripping Project

[Essential]

Confused about how to do the eye textures? Follow this node setup

Okay, so i think i set it up correctly (for his left eye), how do i resize, and reposition it? I've attached a picture of what i have in blender.
Also, for the eye iris UV map, "UVChannel_2" doesn't show up for me to select.

I had the same problem, just go to the eye mesh and then go to vertex tab and find the uv tabs to find the second uv channel.