found myself, know myself

Hi,
I found out myself that you are proficient in English..
I found myself that you are proficient in English.
I know myself that you are proficient in English.

Please correct my sentences.

Generally speaking, first you find something out, and after that you know it.
eg
Q - Do you know his name?
A - Yes, I found it out yesterday.

When you start

Actually the context is somewhat like the below :

I appreciated one person saying "I think you are very proficient in English". And that person asked me, "Who told you I'm proficient in English"?. I replied to him, "I found myself by your way of speaking that you are proficient in English".

Now you please help me.

Hi,
Actually the context is somewhat like the below :

I appreciated one person saying "I think you are very proficient in English". And that person asked me, "Who told you I'm proficient in English"?. I replied to him, "I found myself by your way of speaking that you are proficient in English".

Actually the context is somewhat like the below :

I told a person, "I th

Thank you Clive.
Can I also say, "I know myself that you are proficient in English"? in the above context

Hi,
Yes, but it sounds a bit like you think no-one else knows.

Clive