Was able to get a more even stain now and I think I didn't sand through the top layer, yay. There is still a spot on the front with some scratches I couldn't remove, but not as bad as before.
It's now drying and enjoying some sun (while I need to work inside -.-)
I started to scrape the binding, but quickly noticed it's going to be quite a task :-)
Just a huge guitar with a lot of binding. So I'll spent my evening with it :-)
Still looks a bit like it came from a pirate ship, but not as bad as before. I'm just glad I didn't get the gold hardware, now that would have looked weird
Edit: Oh, I forgot to ask dumb questions! So here we go:
I'm a bit scared using a sanding sealer would move the stain around. It's oil based stain and it's sanding sealer from birchwood casey that goes well with tru oil, so it SHOULD be ok? Not sure if I want to risk it.