Mi nivel de español

よくできました！英語で間違いを正します。

"Todavía" needs tilde (that's not an important mistake)

That "lo" is like the "what", "which" or "that" in English. Because you were trying to say "I can't say what I want in Spanish yet", weren't you?

"Spanish" is "español" (I supose you forgot it and it's not a mistake)

Using "pues" in that context means "I can't say what I want because I don't enjoy", and you're trying to say "I don't enjoy because I can't say what I want", right? So you should use "por eso" (with a comma - por eso, no puedo...) or "así que" (without a comma - así que no puedo...)

You have to conjugate. You cannot say "yo poder".

That "ser" makes no sense. If you want to say "I want to speak Spanish very good", just translate it word by word. You wouldn't say "I want to be speak Spanish very good", right?

That would mean "I have to talk experience", while you try to say "I have to have experience talking".

And well... that dot is not a mistake.

Mi nivel de español

Traducción: [ No puedo decir lo que quiero decir en Español, así que no puedo disfrutarlo en absoluto. Quiero poder hablar Inglés (Español) con fluidez. La experiencia no es suficiente. Yo necesito practicar más. ]

The best translation I can give you would be:

Todavía no soy capaz de expresar lo que quiero decir en español, por lo que no puedo disfrutarlo. Quiero ser capaz de hablar español con fluidez, para lo que la experiencia no es suficiente. Necesito practicar más. 

Mi nivel de español