Today's practice.

1. I'm up here with his lies        I've had it up to here with his lies

2. I'm up here with your attitude towards me            I've had it up to here with your attitude towards me.

3. I can't help but think you talk behind me.                I can't help but think you talk behind my back.

4. I can't help but think I fall back on English.            Correct

5. For the sake of my conscience, I said it.                Correct

6. For the sake of my conscience, I fessed up            Correct (more informal)

7. Please don't dismantle our relationship.                Correct

8.It is such a dime a dozen                                            You usually hear this phrase describing something plural.  So I would correct to "They're a dime a dozen".   And for some reason the word "such" just doesn't sound like it belongs here. 

9. Those faces are a dime a dozen.                            Grammatically correct, but the sentence doesn't make sense....you can't buy faces, so it is a strange comparison to use this expression (which means something is cheap and widely available/easy to get a hold of.)

10. It's dime a dozen.                                                   They're a dime a dozen.  Same explanation as #8

Good job with your practice!  I hope this helps!

Introduction

Hi people, I'd like improve my introduction in the itakki. So, I wrote a text below. What do you think?

"Hello. My name is Fernando and I'm Brazilian. I live in Curitiba, in southern Brazil. I'm a credit analyst for a bank. I love soccer, reading, going to the gym, playing video-games and going out with my friends. I like English and want to be fluent because English is the most important language for business and travel. My English is intermediate, level B1, however, I'm improving each day. I'm a native speaker of Portuguese and I can help you in this language. "

Thank you

The phrases you are asking about all have slightly different meanings. "8 months from now" -- on a date 8 months from today. Example: I'm moving to Atlanta 8 months from now. "in 8 months" -- means exactly the same thing as "8 months from now." Example: I'm moving to Atlanta in 8 months. "the next 8 months" -- starting today, ending on a date 8 months from today. Example: I'm going to live in Brooklyn for the next 8 months. "8 months until ___" -- means there are 8 months until something happens. Example: Only 8 months until I graduate college! Colloquially, people generally say "8 months till ___" (not the full word "until") "8 months ago" -- opposite of "8 months from now." specifies a date 8 months in the past. Example: 8 months ago, I had my first child. "the last/past 8 months" -- opposite of "the next 8 months." specifies a time period that started 8 months ago and ends today. Example: For the last 8 months I haven't spoken to my brother. Hope that helps!

Sounds more natural to me as "What will your point be?"