I need to proof read my post more.

I just edited 4 older post that contained several errors.   The majority of the mistake came from the post I did late at night when my brain was not functioning at optimum.  Common mistakes were transference of one word for another.  Instead of if, I wrote is.  Instead of treat, I wrote threat.  Instead of everytime, I wrote everything.  There were also some grammatical errors that I corrected.  Writing a plural verb for a singular subject or vice versa.  Another common mistake was not using punctuation marks properly.
As I said, I need to proof read my post several times before finalizing the post.  If I do not, I will totally loose credibility at criticizing some of the improper English that I hear.