I just put one of the phantom logos on the bottom right of mine but that's just so I don't mix it up with my old tx. I don't even have any on the phantom itself. I might paint it some day, or at least the top shell, so that's just one less thing to worry about when I do get around to it. As far as where the stickers go, I don't think there's an actual layout for it or anything other than the stripes on the phantom for orientation.
unless... you're actually talking about the stickers that help you with your controls. in that case, (see below)
left stick: ascend(top)/descend(bottom)/yaw left(left)/yaw right(right)
right stick: forward(top)/reverse(bottom)/roll left(left)/roll right(right)
left 3 position switch: off(top)/course lock(center)/home lock(bottom)
right 3 position switch: gps(top)/atti(center)/failsafe(bottom) (note: bottom position on this switch can be either atti/failsafe/mann)