Here are my pictures....
Obviously for the super model one I didn't have to do much. Just kidding! I took away all my blemishes, freckles and moles. I took out my nose stud. I fixed my teeth and whitened them. I lightened my eye color and darkened my eye shadow and lips. I changed my hair color, gave my skin a glow and fixed the background.
For the Zombie I used a watermelon rind to give my skin texture via layers and blendmodes. I altered my cheekbones and jaw line. Added a maggot infested open wound to my chest, changed my eyes to green and darkened the image overall.