First we print it out
Then we notice
the red words "1 Mountain fold red line" and the red lines.
So we
fold along the red lines such that they form an outer (mountain) ridge.
Then we notice
the cyan "2 valley fold" and a cyan line so we fold along the cyan line such that it forms an inner (valley) ridge.
Then we see
the green "3 valley fold (from GLOP's reflection overlapping EPIC) along" and a green line so we do so.
Then there is
purple "4 valley fold" so we do that too.
Now we see
orange "5 cut" and some scissors and an orange squiggly line. We take our scissors and cut along the orange line. Then we unfold and find
a beautiful snowflake!
Then we see
in the center "exit maze here!", in the top-left "Start Here!", and in the top-right "Don't cross" with an arrow pointing to a red-white striped bar. Looks like we have ourselves a maze!
Following it
from start to exit, we trace a path that crosses several symbolic images: Christ, Massachusetts, percent, a minus sign, cent, an 'h', some apps, a mean face emoji, an 's', an 'a', a lit candle, a bottle, a minus sign, a bot, a drill bit, an 'm', and an oar.
Interpreting them
as a rebus, we get CHRIST + MASS + PERCENT - CENT + H + APPS + MEAN + S + A + LIT + BOTTLE - BOT + BIT + M + OAR
or
our grinchy message:
Christmas perhaps means a little bit more!