This was the original drawing. I didn't go with it because I felt it was too simple, too flat and possibly boring
So here's the gif!
Revisiting it I went with this first, however I felt the eyes and grin were unnecessary and looked out of place. Also I realised that the man shouldn't relax his expression until the hand had disappeared. Both of which I have amended below.
As seen here.
Following some techniques I've used in my last brief on ghost stories I have used textures on this gif as well.