This week, learn what careers exist for someone with a liberal arts degree, is it ok to send resumes before degree completion, and what employers look for in writing samples. You just have to decide what that is. Certainly, some positions will require specific graduate work, such as medicine or law, but that can happen later. The challenge is to figure out what x is.
Many employers make job offers months before a candidate is actually available for employment.
I would send your resume out as soon as possible and start interviewing. You may also have the opportunity to start working part time now while you finish up your degree. This policy will vary for different employers, but it is not unheard of.