EDIT: FUCK MY LIFE, GUYS. One little letter in one little word. I was off by that much, but fixing it was like prying Persephone from the claws of Hades. This is probably the reason I put it off for so long and moved the drawing to my scraps, where my shame would go unnoticed.
But today was not a day for the hearts of men to fail. Today, I fixed this damn drawing! ...after a full ten minutes of self loathing when I remembered I had lost the original file, and then an additional five minutes cursing Photoshop for freezing.