Okay, this is a good learning experience.
first up you want to try and work out where it has gone tits up.
I’d start by re-establishing your Center line and seeing how the neck and bridge line up to that, it may point out whether it was drilling or the marking prior to the drilling that has gone wrong.
if you can, post up a couple of shots of the rear of the neck pocket area and the drilled back of the neck, and a couple of the bridge in relation to the neck. The team will probably suggest some other potential fixes.
Everything is fixable, mate, don’t stress to much about it.