Originally Posted by
Sehven
Another wierd sticker glitch I've run into is the stickers "jumping" during corner editing. I was doing a complex character cutout using 5-6 overlayed stickers (took pictures with an eyetoy in sections) and after editing a handful of corners, the stickers would jump to the left a bit. You can imagine my frustration when all my edited corners became useless. I overcame the problem by doing a rough cutout using the delete tool (hold triangle instead of X while painting) and shaving a piece off. I don't know exactly why it worked--maybe the cut off piece acted as an anchor or something--but once I had cut off a piece, the stickers no longer jumped and I finished my corner editing.
It's not exactly the same problem, but I thought it was worth mentioning. Maybe a similar approach would "anchor" your big sticker. You might try extending the object beyond where you actually want it and then cutting off a piece.