The first dream could maybe just represent a personal connection to Krishna
The second dream maybe represents taking comfort in Krishna ( represented by protecting from the killer, protecting you from danger ). Not believing your are Krishna might just represent your own humility?
I think the third dream maybe represents humility also. Maybe in waking life you would
not use power selfishly, and so this is why the dream plays out the way it does, to show you this
The fourth dream I wasn't so sure about, although seeing the gopi as the Krishna perhaps means that something about how you view a gopi represents how you view krishna? Maybe innocence, humility, whatever you might associate with a gopi, maybe this is what you believe should embody a follower of Krishna?