My first Project has been rejected - Your opinions please

I’ve been working on my first project during 3 days, I knew I could make it better if I had enough time, so It wasn’t that surprising to me, I won’t give up, If only you tell me what was wrong with my project. My purpose was based on simplicity, I wanted to make it easier for customers so they can edit it and place their videos with no difficulties.

I still don’t know what this project needs to be accepted