>>6If you are going to use "Me" before "di por vencido", you need a preposition which indicates what exactly did you give up, because the "Me" indicates you are talking about yourself (You gave up).
"Me di por vencido por el tablón" or "Me di por vencido con el tablón", you probably wanted to say it without Me (Like in english) "Di por vencido el tablón", which indicates you are talking about the tablón, not yourself.
"para un maricón"? Maybe you meant "como un maricón"? (Like a faggot)
"Tiene" is present, you mean "Tenga" (Future).
You forgot to put something after or before "maté", what did you kill? If it's assumed by context you can say "antes de que yo LO maté", or if it's not "antes de que yo maté el tablón".
I'm not sure of "maté" though, I would have put something like
"Espero que tu tablón tenga más éxito que el mío como era antes de que yo lo mate" which is the present form in subjunctive, but I'm not sure.
"Creó" is for third person, you mean "Creaste", which is second.
"Aprendedor" doesn't exist, is "Aprendiz".
The "y" in the last sentence is not needed, it's the same as in english.
"Good luck with that, I'm going to post in this board a lot". There is no "and" there.
I hope this helped you.