You are 299% sure that your project is mega-cool and useful, that does not need any additional clarifications? It deserves respect, but this is absolutely not convincing for a potential investor, he must be sure on a few percents more than you are
Want to learn how to eradicate all doubts of a potential depositor - this article will definitely help you out.
https://4irelabs.com/prove-investors-your-fintech-idea