Take it gently. Take it smoothly. Take it in peacefulness. But don't get complacent. Your body will never forget these moves, but, without practice they will become rough, and slow, over time.
Some harps have a great, loud voice and ego, and are easily heard.
Take your time, and listen for your Harp's Name. If you must sit on the ground or the floor, place the box where it's comfortable, but always rest it on your left shoulder. The Harp is constructed to be held this way, as opposed to modern harps, which are held on the right shoulder. Keep your elbows down. This is different than modern harp technique.