Different
Hmm... I like the way that this is entirely hand drawn and not copy / pasted, to fill up the image with carbon copies, which you just tweak, which would be a little lame, to tell the truth.
Okay, so they all do seem to have the same facial expression, which creeps me the fuck out. Where you've added the tongue to the central one, it looks even more strange and ever so slightly off-putting.
The main issue here is a lack of colour. Yes, I appreciate that you've drawn it black and white, because that's the colour of ghosts, but to me, it seems like a cop-out. By that, I mean that while you're drawing white imagery on white paper, you could use the background to full effect, by adding colour around there. Who says that ghosts have to be completely opaque? I've seen popular representations where they are quite translucent and the only way you can see them is that they make the background lose focus. That's a more advanced technique, but coloured pencils can do the trick, if you get the shading technique right.
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