I am a new game developer and I am curently working on a fnaf fan game called five nights at phlippy's

#HappyBirthdayFNaF!

(I did not make the image)

Progress....

HAPPY NEW YEARS

Currently working on a fnaf fan game called five nights at Phlippy's and I am about to be done making Phlippy

Hello people I am having trouble figuring out how to put a pupil texture on an eye in blender can anyone help?