I used a "muscle memory" left hand training method. Load the CD player in your car with Cajun tunes and as you drive 'play' the base-chord left hand part on the steering wheel. Pretty soon your left hand will be tapping base-chord automatically to every bit of music you hear. It sounds strange but it allowed me to concentrate on the right hand when learning a new tune.
Leslie
One difficulty that is encountered by learning the right hand first is air management. Now you're consuming air on the left hand and running out of it on the right.
Start slow and breath easy.
Craig