AgentF, on 11 March 2011 - 10:25 AM, said:
I would try using the Magic Wand with varying tolerance levels to select the white background and delete it. Then zoom in and erase the missed pixels. If you attach the image here, I may be able to do it.
I don't think that's what the OP is asking. I have the same problem: an image pasted *after* the Magic Wand has been used. A halo effect remains that keeps the paste from looking natural--even after I 1) Blurred; 2) Painted Over; 3) Attempted unsuccessfully to clone. I think the OP's asking how to make an image cut-and-pasted from another photograph look natural.