It's possible! XD
http://i1108.photobucket.com/albums/h408/rosieonfire/Posters/tumblr_lhmkc33EX31qgb7ido1_1280.jpg

http://i1108.photobucket.com/albums/h408/rosieonfire/Posters/tumblr_liyhe2xH9y1qf3vte.jpg

hahaha not really, but I found these tutorials helpful,

http://www.herospy.com/tutorials/zombie.html

http://naldzgraphics.net/tutorials/45-horrifying-photoshop-tutorials-for-halloween-season/

This one is my favorite:
http://www.imarc.net/blog/42-freakish_zombie_in_11_steps

You don't have to do the white-out for his eyes, idk, but I personally don't like it.

I'm still in love with him. NO MATTER WHAT HAPPENS. :) SARANGHAE !

LOL T.O.P still look handsome as ever

http://www.asianfanfics.com/story/view/142288/bitter-monstrosity-graphic-shop-angst-graphic-horror-request-posterrequestshop

That is ratedrawr' shop :)

Maybe you should add more texture or intensify the color.
anyway, top will always be handsome
Have you seen ratedrawr's works?
She's good at this
Nice poster btw. Although it doesn't reflect the title that much ^^