Translation:How happy are you with your knowledge of Czech?
A potentially helpful hint for sorting the sentence order with "to" in pronoun positions (To je moje auto., Je to staré auto.), but not in adjective positions (To auto je moje.):
- When "to" means "it", consider it a clitic (like "ho"), so put it in the second slot.
- When "to" means "that" or "this" (This is my wife.), consider it a regular word following the regular rules for w.o. (left positioning for topic, right for focus).
When it works as an adjective ("to auto"), it moves around with its noun phrase and follows the regular w.o. rules.
[I am borrowing the pronoun/adjective distinction from English. Czechs call both of these "ukazovací zájmeno" (demonstrative pronoun), and then we predictably do not know what we are talking about half the time when explaining the translatability of the demonstratives between Czech and English.]