FIRST!

gather all your materials.
you don't need the palettes, but you do need the equivalent:

dark red matte lipgloss.
red, brown, purple, black, and light pink matte eyeshadow.
(you might also want white if you're not pale, lolololol)

also, i used a paperclip for tiny details, but i just didn't know where to put it in the pic, hahahaa.

take some white eyeshadow and apply it lightly all over your face. we're going for zombie, not vampire! lolol

once you're nice n' pale, start to darken your eyes, and try to make them look sunken.
i used darker shadows near the eyes and more lighter brown and pinks on the outer parts.
i also used purples and hints of red here to make them look bruised too.

k, now that your eyes are sunken, next is to add some gashes, cuts, stitches, etc.

FOR BRUISES!
i used a medium sized stippling brush. i dotted the black/brown/red/purple/light pink all at the same time and put it on in a random pattern to make the bruise look believable.
FOR CUTS/ GASHES!
the first layer to the cuts, i used black/brown/red eyeshadow to make it look bruised. then, on top i used the red lip gloss and the black face paint to make some parts look freshly bloody, and dry bloody, lol.
STITCHES!
for the stitches, i unrolled a paperclip and dipped them in the black face paint then drew stitch lines in.
ZOMBEH LIPS!
the chapped lips were easy cuz my lips are kinda chapped already :/
i drew in some lip lines with black eyeliner, then i smudged them with my finger.
then i used the black/brown eyeshadow combo to make the cuts in my lips look deeper.

to add more carnage, i added bullet holes. :D
to do that, i took my stippling brush and made bruises that are more shaped and circular. you want them to be a bit bigger than the size of the bullet hole you're about to make.
for these bruises though, i used more pinks to make the flesh look more raw.
for the bullet holes i took a piece of toilet paper and ripped it into a tiny sliver. (make sure that it's 1ply or 2ply that you ripped apart)
then, i wrapped it around my pointer finger and then put glue on top of it.

thennn, i stuck that baby into the center of one of the circular bruises, waited for it to dry, then added the same effect i used for the gashes, except i made these more bloody.

now you're done!
after i finished, i thought it'd be fun to scare people on omegle... and it was. :D