I am turning an open nook where a makeup counter was into small linen closet. There will be a partition wall with an opening for folding doors and a small bit of drywall on the outside of the opening. As seen in the pictures, there is a short finished inside wall and a finished outside corner that I want to extend drywall past.
What is the best way to do extend the drywall and build this partition wall? Should I remove the corner metal piece and attach the new studs, set back about 5/8", with screws through the existing drywall and re-mud?
What's the best way to make the new and old look seamless?