Undead forest

hi this is my first undead scene as i saw very few around here
i used photo manipulation followed by pixel bender on the background , and some painting i did
guys this is good but i feel something is missing if you have any idea or technique let me know and comment plz

YOU HAVE NO RIGHT TO USE THIS IMAGE UNDER ANY CIRCUMSTANCE
pile of skulls : [link]
Spear : [link]
Head : [link]
Gargoyle : ~nixie04
Fog 1 : [link]
Fog 2 : [link]
skulls: [link]
Forest : ~TwilitesMuse
wall : `faestock
Sitting skeleton : [link]
sword : [link]
and of course some brushes ^^
if you guys want to download this just let me know by comments
PS : some modification were made , and sorry nixie04 i removed your statue