This is a personal piece- about PTSD. I was feeling out some ideas for this one, and actually an Adventure Time episode made it click- the one where Finn says something to the effect of, "Oh the vault! That's where I keep the things that I can't handle." So this a representation of The Vault. Sometimes things try to creep out, and most of the time you try and shut the vault. Sometimes you can, sometimes you can't. You'll always have the scars from that trauma though.
Some of the design was just for pretty, but most of it is layered symbolism, right down to the colors.
Painter X3 and a Wacom.