Suggestions For Running Business Company as Selling Templates & Themes on Themeforest

I would like to run business company as selling templates & wordpress themes on themeforest. I have worked over 7 years as a wordpress developer & code reviewers in some of the companies. Now, I would like to do by myself. Now, I uploaded a template on the TF. So, Could you suggest some ideas about running company as selling templates & wordpress themes? Thanks in advanced!