Well I'm only 12 so don't expect anything unique
I'd agree with Neil Jones' suggestion (above), and say that your best course of action, since your work is so similar to a mock previously submitted, is to take a look at the following link (https://tvforum.uk/thegallery/itv-2020-rebrand-project-45420/
) and follow the advice given there. This will still result in what is effectively a facsimile of someone else's work, though, so it might feel more rewarding for you if you played around a bit and put together something unique to you. It won't be perfect but nothing ever is when you're just starting out and playing around.
Guess who's big in the back time!