I agree the last one may look interesting in b&w. They all seem to be suffering from lack of sharpness and incorrect white balnce. Try these again, but keep the flowers much further away from the wall in the bg so as not to cast the shadows, unless you are intentionally going for that.Try getting in closer for some shots and set the camera to Macro. Also, what editing program are you using. You might want to try the auto color step to see if that removes the unusual color casts and brings some livelyness to it. I actually like the second one best as it has a soft painterly feel to it