It’s mostly about Research, Strategising, Execution, Analysing the results. Your venture showcases loads of features, so you might wanna try what gets the most response. It could be the ad that focuses on “Rent” Feature or “Buy” Feature or the ad design that features all, it could be that the ad creative might be showcasing good clothes and accessories. Then work on why the other feature, isn’t getting traction do stunts like facebook campaign, Video Campaign that will give you results and data to analyze and study. Organically you can go live on handles like Instagram, Facebook for giveaways or special offers after gaining some followers answer questions related to “renting clothes” on Quora as well and there also you can talk about your venture. Instagram and Facebook ads will give a good kickstart and do track what kind of audiences as in age or country are getting attracted to interact with ad or post.