My suggestion is that you combine your interests and your knowledge. Technical people tend to lack one important concept and that is being non-technical and approaching problems from outside their focus. I would suggest getting a technical degree 2-4 years in the field of your choice from either a technical college or a state 4 year school. Choose the degree with the idea of how you might apply your arts based experience and education as well as interests to that degree. For instance Mechanical Engineering might lead to writing or designing instructional materials. A hard science based degree may lend itself to being a grant writer. A Computer Science degree might lend itself to a technical writer (The person who explains to the masses how to use software). Careers can end up being how you sell yourself as well. You might not need another degree at all as long as you have technical hobbies and general knowledge as well as high interest in a subject.
When you interview for jobs do not be meek. If you feel like the job is above your abilities or if you feel intimidated by a few aspects of the position know that you will have an opportunity to learn. You will make mistakes and your employer expect a certain level of learning from any College grad. Promote yourself with the abilities that you do have. Soft skills like attention to detail, the ability to work as a team, being friendly and social, being a self started, being able to self teach/grow. You also likely have hard skill such as an impressive vocabulary, understanding various cultures, critical thinking, computer skills.
The number one frustration I have with college grads is that all to often they think and say "I can't". Usually the case is you CAN, you just haven't learned and applied yourself yet.