for the record, many chrsitians for no reason, are mistaken about lots of it.
im athiest, but im just well educated in the 3 main religions::
You do not become an angel when you go to heaven. angels are separate beings. this is very specific and the bible goes WAY into the details about it.
nor is it even POSSIBLE to be a ghost, and linger around on earth haunting things. (according to christianity)
the ghost concept has been fiction(s) for thousands of years and dont specifically apply to any religion.