is this sentence correct?

I would like that if I have a mistake tell me.

Si estoy cometiendo un error, quisiera que me lo dijeras. -  If I'm making a mistake, I would like you to tell me.

Si cometo un error [en el futuro], quisiera que me lo dijeras. -  If I make a mistake, I would like you to tell me.

Si cometí un error, quisiera que me lo dijeras. -  If I made a mistake, I would like you tell me.

Si he cometido un error, quisiera que me lo dijeras. -  If I have made a mistake, I would like you to tell me.

Is this sentence correct?

I would like that if I have a mistake tell me.

If I make a mistake, I would like you to tell me.

Is this sentence correct?

I would like that if I have a mistake, please tell me.

However, this is an artificial but grammatically correct sentence.  It would be better to express as 

[Please] let me know if I [had] made a/any mistake.