Bending accurately by ear

As you know, you should always use a tuner when you're practicing your bending. Along with the bending exercises on the bending studies, I like to add in bending down to the note with my eyes closed and then opening them while holding the note to ensure it's accurate (give or take 5 cents in either direction). It's good to try bending into the note (up or down), stepping down to the note, and starting the onset of the note. This seems to help my ear know if I'm bending in pitch.