Thanks Steve
What I want to do:
The image sizes for original SoA characters are 140x138 pixels (including items that can be worn by the player or NPC).
I will be using larger images (at least 150x150) for the mod that I am working on, so when I load them in game, the player image is not on the same coordinates as the original player image. This is why I need to change the placement of the player image. (I actually intend to change the whole interface and probably place the player image somewhere else completely.)
The picture below should explain it better than I can do with words.
There's also an example of a POX ("Elite Guard") that I'll be using in the attachment.