I have a new ebuild. What must I do to be accepted into Portage of Funtoo?
Take a look at Flora (http://www.funtoo.org/wiki/Overlay:Flora), it is an overlay for user-contibuted ebuilds, and once accepted in Flora, ebuilds of new packages (that are not in Funtoo now) will be automatically added in the tree.
Thank you for the answer) And in this overlay to put your ebuild?
You can add ebuilds in this overlay, please follow the guidelines on the wiki.
After a review, your ebuild will appear in the overlay, and it's an ebuild for a package that doesn't exist yet in Funtoo, it will hit the main tree and become available for all users.