I have spent lots of time trying to design a nice structure for my project and I would like some feedback to what you guys think, please note this is the first time I've ever done anything like this. About My Project I am creating a service where advertisers can search through a catalog of websites they want to directly advertise on. Once they have found a website, they can upload an image, pay the fees and start advertising on that website instantly. I have designed an image of how I think the structure should look, I have designed it this way for efficiency but I am pretty sure I could improve with some help. If you need more info or have any questions, please ask. Project Structure Design Image Thanks for reading, what do you think about this structure? Can I improve it?