You need a video review on Youtube or Facebook for 10-15 minutes, or a post on Telegram / Facebook about the functionality of the exchange, and the LOT exchange token. For details write here, or in telegram @ mbenzE350.
Payment - your price in $ equivalent, in LOT tokens. Additionally, bloggers may be interested in a referral program.
Why not post it in the bounties section, it will attract bounty hunters there, I'm sure if your project is good enough you can have a lot of bloggers and YouTubers joining your campaign, I have seen one projects attracting over 100 bloggers and Youtubers, I stopped doing blogging campaign because there are too many fake projects, it hurts my blogs promoting scam projects.