Hi, Is there a function to Display My name as a Nameplate like the other Players? I only Can Modify Friendly and Enemy nameplates but not my Own nameplate. or i have overlooked this?

There is an option to display your own healthbar in the normal interface options.
However, this addon currently does not affect/skin that healthbar due to it causing some rather major issues.

Ok thx for the fast reply! :-D

and is there an option to display the player titles in the Players headline?

No, not as far as I am aware.

ok, thx! :-)