Will you be my wife? how to say it please. I have trouble with using "pral".

I hear you. I would have 'trouble' using "pral" here too :)

Will you be my wife?
Eske ou vle vin madanm mwen?

Would you be my wife?
Eske ou ta vle vin madanm mwen?

Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words