What can you expect ...

Expect to be awkward and frustrated at first.  Like any new task, this takes time to get used to.  But over the first 20 practice sessions (that is, 1000 questions, which you can easily manage in 10 days or less), you will see dramatic improvement in the graph that records your scores.  Stay with it and you will notice how you begin, slowly, to default to the kind of question that is both short and clear.  Be curious and see what you discover.