Good ways: Post fan art. Make your page a rainbow seizure, sometimes works. Say "you're going to give away 1000 points but you must be watching me."I've seen someone get 1100 watchers from that. Should be more about the art, not numbers. sigh.
Have you ever asked for feedback on your writing in the designated Literature Critique Thread, made a Thumbshare thread for comment swaps on lit (or posted in existing Thumbshares offering critique or asking for lit), joined a writing group, made friends with other writers?
The literature community is smaller than the art community, but it is very active, and it is actually very easy to get feedback. I've found it much easier to make friends with writers on DA than with visual artists. The writers I know love to swap critiques and read each others work and share advice.
It's harder for people to make time to read stuff. I think around 12 people read the first part of my story (this is higher than I expected). Oddly, I still want to write a huge story because writing is so interesting.