Market research, market research, market research. Look around here, Poser Pros, DAZ, etc., etc. Don't just look at the pretty pictures; check the read-me's, the user comments. Learn what the expectations and the standards are of the market. There are various forums where content creators show up -- those are great for shop talk. There are also places, like the Poser Forum, the Wishing Well, the Fairy Guild's board, where people talk about both their experiences with various products and their desires for what they'd like to see someone make.