Firstly, I really dig your UIs, especially the tribal one.
I have been trying to edit blizz UIs for some time now hence I do understand the basics.
I use gimp to do the cnp and minor paint work. Problem is that almost everytime 'UItile03' overlaps the 'InventoryCover', and 'UItile04' is out of alignment. I try and assemble the pieces in gimp to make sure they fit perfectly but in-game everything goes haywire.
Thanks for posting btw +rep