I opened up the original textures I had already resized, put the new improved layer on top, used magic wand on original layer, selected the new layer and deleted it, any black pixels remaining was removed manually with eraser in photoshop. If you dont already have that to go on, you could dupe the new layer twice, move the black slider to the right in the blending options on the bottom layer, erase any remaining black pixels, then go to the layer on top and just delete the transparent areas using marquee or eraser tool, so the top layer covers any deleted pixels on the actual texture.
EDIT: Fixed transparency issues for Ifrits earrings