How can I change the Plymouth into F38 Workstation?

I would like to change the Plymouth for an image that I have downloaded, I have looked for information but I do not find something similar to what I want to do, it is simply to change the Flymouth for an image of my own

You can’t easily do this.

If you want to dig deeper, start here

EDIT: Sorry, I had written “can”, but I really meant that you “can’t easily” do this…