phil wrote:#8 experientia (just a typo I suspect)
#12 I think that sapientia should be accusative, as it is the object of the imperative. Also, me should be dative, as it is the indirect object.
#13 tibi is dative, what you're trying to do here is describe the name, so I think you should use the adjective form: it should be nomen tuum.
ad #12: a misleading word, donare.
It has in fact two uses: "donare alicui aliquid" (the one you had in mind) ánd "donare aliquem aliquo". This second form is employed in #12. In it, the person
is pictured as the one who undergoes the act of giving, while the thing being given
is thought of as the means by which this giving is performed.
as for #13: quid should be quod ("quid" is regularly used as a substantive only, not as an adjective interr. pronoun), but other than that it is correct. If we should render the sentence into what propose "quod nomen tuum est?", the emphasis would lie on the fact of possession. But the questioner doesn't is not so much interested in that fact, as he is in the question what
it is, that is owned.