I've been trying to sign up for lessons on italki to increase my speaking level, solidify grammar, etc., but I've been a bit frustrated with the lessons I've had so far.  Other than just doing general conversation practice for an hour, with not real objective in mind, I haven't found any speaking exercises that feel effective.  I'm not a language teacher myself, and am falling short on ideas.

I'd be curious to hear how others who use italki use their lesson time.  Are there any good methods to practice specific grammar points, newly learned vocab, etc. that you like?  Are there any teachers / tutors that you feel are good?  Their current rating system makes it impossible to actually guess at the quality of the teacher since all are 5 stars.  I'd like to find a teacher that takes some initiative, and actually corrects me on my mistakes during conversation rather than just telling me how good my japanese is and that I'll have no problem passing the JLPT.  Both couldn't be further from the truth.