'fraid not. 18 inches of old dell monitor and not even the HD variety.(I also have my TV which is a little bigger, but I think it's more noticeable on my monitor.)
Screen resolution is 1024 by 768. The combination of the two makes her appear life size. I know this because I am only slightly taller than a gardevoir(according to the pokedex), the screen makes her head appear human size when you go for the actual image size, and with how high my monitor is position while the display is set to actual size, it actually measures up rather accurately.
So yeah, short version, with how my monitor is set up, the Shiny Gardevoir version's resolution on that link you gave, makes her life size to actual human proportions amazingly enough. That in itself is pretty cool and really shows how well you drew your Gardevoir.(Which is pretty good)