great story
well hope you write more. stay with the ghoust angle I like it.
as far as criticism..hmm extend the explaination of the tickling and the sensation that is going through the person. ummm well make the tickling a little longer. I like the fact it was a first person point of veiw keep with that, I liked the fact that the ghost was attracted to his feet like everyone else was, and It was nice how the ghost got personal with him with saying tickle tickle and telling him that she might be back
as far as I deas how about the ghost getting people/person in different locations in the house or more ghost. maybe the person/people call a ghost hunter who gets tickled till they agree not to hunt ghost. maybe make the story be in parts or other short stories with the same ghost or person.
I like this ghost story idea if you need more ideas pm me I've got many more hope that helps bye