what size is the book cover ?? and only front cover ??

The cover needs to ideally be 4500 (h) by 2820 (w). Yes, only front cover. No larger than 5MB.

Hello,
would you consider a proposal just as bold and outrageous but only made up of graphic elements, IE without all the illustration details you envisioned?
How are you going to commercialize the book? Will it go into shops?

I have no idea what you are asking, unless you are asking if you can submit a design that looks nothing like what I'm requesting. I'll consider any design and if it's really good it could get accepted. The odds just will not be in your favor.