Names are the same in French as they are in English.
Donald is the same name in French, but is pronounced Doh-nal-d
Donald duck is called 'Donald' or 'Donald duck' in French.
Donald
You could say 'voila'.
To say "you are doing well" in French, you could say vous faites bien! If you know the person well, you could say tu fais bien!
Dominic if it's a boy, or Dominique if it's a girl.
cheval
No but if you want to say pretty in french you could say beau for a guy and belle for a girl. You could also say joli for a boy and jolie for a girl.
I would say Miley Cyrus because she is a singer but it could be Donald Duck because he has been around longer (i think)
Je souhaite (or something along those lines)
To say "I am so jealous!" in French, you could say Je suis assez jaloux!
You could say, "Mes passe-temps sont..."