I have chosen to install drywall in a small basement room. The walls in the room made the work a bit more demanding when I cut the boards. They didn't turn out completely neat. Now there are some gaps and uneven parts. What would be the smartest way to tidy up these irregularities? Smaller pieces of drywall? Plaster? Plastic joints? Acrylic mass?
Learn to live with the appearance or redo and make it right.
In a basement where no one should live, you can practice plastering; before you take on the next surface, it's probably good if you read up or watch some instructional video.