You'd have to be really mean to say that, as using the verb ser makes it permanent, rendering the sentence something like "You will always be a liar, a coward..." I'm not that mean, so I used estar.
How do you do accents on this board? Word has the "Symbol" option, but I don't see it here.
And especial can be translated as "special" and "spicy", but un nave especial is "a space ship" or "a rocket ship".

Mas frases!

Hola, me llamo x. Como se llama?
Hello, my name is x. What is your name? (Litterally "What do you call yourself?")

Prende el televisor! Neil Tyson esta en las noticias!
Turn on the TV! Neil Tyson is on the news!

__________________
I want to go back to the moon.
I don't care which rocket you use, whichever one you pick, I'll like it, I swear.
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek