The birthday of my son My son's birthday

The birthday of my son My Son's Birthday

My child is all for me everything to me and he teaches me a lot every day.

On this day, I can only implore God to always enlighten him, and give me the strength and wisdom to educate him.

I hope he becomes a better man than I, and can follow a life of honesty and pride.

6 years old of my son My son is 6 years old... Wow, I'm getting old!!!

-To express possession you just need the ('s): my sister's husband (not the husband of my sister), my mother's kitchen (not the kitchen of my mother). Here's an article: https://dictionary.cambridge.org/grammar/british-grammar/determiners/possession-john-s-car-a-friend-of-mine

-We use "turn" to express becoming a specific age. This is an article explaining how to talk about age: https://www.englishoutsidethebox.com/2015/12/11/how-to-talk-about-age-in-english/ 

-Not sure if you mean "all mine" or "is everything to me"

-If by "implore" you mean "beg", then it's technically correct; but I would just use "ask God".

-Proud is an adjective, pride is the noun. "Pride" on its own usually has a negative meaning, similar to the words "orgulho or arrogância". I haven't seen it used in such a sentence in a positive meaning. A better word would be "dignity".

I hope this was helpful!

Revised version below; please compare with your original, thanks! 

My son's birthday

Today, my son/child turns 6 years old. For me, being a father is a great responsibility and a great honor! My child is everything to me and he teaches me a lot every day.

And on this day, I can only implore God to always enlighten him. And give me the strength and wisdom to educate (him).

I hope he becomes a better man than I and can follow a life of honesty and pride. (Consider: […] can follow a life of integrity he can be proud of.)

My son, already 6 years old... Wow, I'm getting old!!!