I finished a 50+ page story, but i'm not proud of how i got the main character from one point to the next. I had a few months (half a semester in college) or so to come up with the plot, chatcters, and to write out the rough drafts then the final. I hit a writers block but didn't have time to do what i planned, so i improvised a scene to make it to the end destination.
Art is subjective, but i believe if it's something made out of inspiration then it's art regardless of what it is. Whether if it's good art is debatable.