I quite like your witchblade and your blackbird and the dreadnought, on the first you did use a bit to many polys on the round orbs, 1 smooth less would probably still look mostly the same.
Overall your modeling seems fine, some areas have a slightly to high poly count but overall they look great. Quite like the fact that most of your topology is kept in nice quads.
I would give the blade a nice texture (and if you don't want to do it yourself you can send it to me and i would do it, currently trying to learn more about textures anyway, so a model that isn't mine would help it). Since that would give it some more views.