I suppose I might start a new thread for this question, but this seems close enough:For what it's worth, the first-generation Volt has that same matte black plastic area along the bottom. I placed the stickers there back in 2012, and they haven't fallen off yet.
When placing the stickers, did you try to make them parallel to the ground, or parallel to the closest body line/seam? Or some third method? I'm planning mine out, and it seems natural to make the straight line parallel to the seam between body panel and black plastic bumper, but when I step back (I'm taping on copies to test), it bugs me that they look tilted.