It is fantastic. I am a huge fan of dark and horror stuff, myself doing some eldritch abominations whenever I feel down, but your piece is on an entirely next level The soft grayscale is amazing and none the less use of values for details still manages to create stark, powerful contrasts. The 'leashed' critter looking like a tumorous flea, the 'man' with this luminous, fungal head... It's creepy, it's brooding and it's beautiful.