Neat copper work, but you haven't run any over the top to make contact with the copper going under the pickguard. Will you be running a dedicated ground wire for the cavity copper foil as an alternative? I can see a small amount of copper at the edged of some of the routs but you really want a decent contact area, and ideally run at least one area of copper underneath a pickguard screw hole so there is good positive pressure holding the copper together. It doesn't look as neat, but it's all about the practical aspects and you won't see it when assembled.