Standardbreds + Cantering

[concise]

Okie dokes, so. My horse was a pacer on the track for about two years, where they forebode cantering. Now that he's my little pleasure horse, we need to work on that. I have some idea of where to start...but not much. What we've done so far: Having his land in a canter from a small crossrail jump, or simply asking for the canter in corners, where it's easier for him to pick up. He can canter on the lunge line going track left, but going track right...he doesn't get it yet. I want to let him know, canter is a gait, not a speed. ;)

His trot is balanced and even, and most of time he comes round.

For anyone who has a STB or experience with them, how did you teach them how to canter?