(lojban group bounced me for a while, so if someone posted something in the past few days that was addressed to me, I apologize for missing it)
I'm not sure that says what you want. "ja'e lo mi cilre" is "With the result of my learner". I think you wanted a "nu" there, after the lo ("so that I may learn...")?
ja'e lo mi cilre ku ko jungau e'o fo lo do krinu be tu'a zo zei
I'm proud of myself; that sounds better to me in lojban than the corresponding English would have. I think {krinu} is the right "why", but I'm not sure.