Antonyms for the word "more finishing" could include "less finished," "unfinished," or "rough." A finished product or surface is usually smooth, polished or complete, but the opposite of that can be described as unpolished, rough, or imperfect. Additionally, the term "more finishing" suggests an additional level of completion or refinement beyond what is already present. Therefore, antonyms would imply a lack of completeness or even a decrease in the level of polishing or refinement. Other possible antonyms for "more finishing" might include "less refined," "coarse," or "raw.