I'm having a contractor do renovations in my kitchen, and we are converting a wall into a half wall with countertop. He just started doing the drywall, and from my inexperienced eye it looks like he is doing a terrible job. I've got some pictures below, and I'd appreciate feedback if this can be finished properly or if I should insist that he redo it.
Here there are large gaps between the existing drywall and new drywall. The surface of the existing drywall is also torn off.
This is the ceiling and there is a large gap around the light fixture.
Another example of gaps between drywall pieces and the switch box.