I gotta say, this song is probably the hardest to do a cover of. It's really hard to do because you believe the song's starting in b minor, then it does this tritone thing (I think that's known as locrian) with the 5th, and it's all over the place. I think you might have put your own spin on it, but tbh you pretty much have to. I believe this one is really meant to have the tonality constantly transformed, and I think the original would have done much more development if it was given more time.