Here's a breakdown of the errors and how to fix them:
* "Tu" should be "tú": "Tú" is the correct way to address someone informally in Spanish.
* "Habla" should be "hablas": "Hablas" is the correct conjugation of the verb "hablar" (to speak) in the second person singular, present tense.
* "Esta noche" is correct but should be at the beginning of the sentence.
Corrected Sentence:
"Esta noche, tú hablas español."
Translation:
"You speak Spanish tonight."
Let me know if you have any other Spanish phrases you would like help with!