Long Tones

An important element of bending control is to start a note bent (without it sliding down or up to achieve the pitch), hold it at pitch (not allowing it to waiver in pitch) and stop it on pitch (not letting the pitch raise). Try this holding the bent note for as long as possible, keeping the volume consistent. This is called practicing "long tones" and is common in the brass world (like trumpet). Give it a try, it's a great exercise.