Are these images your making from poser intended for a display of character like in a small display box or some sort of fullscreen image in a splash like screen or are they going to be used as sprites?
It appears theres no thought to the black areas around the figures outline.
I guess you could render the final model into a sprite but that would take a different light approach than what this and the previous one of the lady would lead me to assume.
any post image processing would be hard basket if rotations and animations are required.
I dunno, I can only assume what your going to do with them.
Its pretty ambigous about what they are for so its hard to comment correctly.