I wouldn't be so absolute about your lack of arts, I retaught myself to draw over the summer and got familiar with arty computer programs, going from shoddy sketches that look like my kid brother did them to the flat-coloured Lyra and Pinkie. All I can say is, if being more arty is of any interest to you, go around watching some of the greats and you'll get ideas. Befriend some people and ask about it, or study tutorials and FAQs. If that sort of thing is working for me with my degenerative eyesight and chronic laziness, I'm sure it will work for you too