I just want to share this to all harp lovers. Hope this helps.
Meet the harp: Create a pyramid between the harp and your upper body.A straight edge chair encourages staying securely in position without torquing. Right angle legs add stability.
Bring your harp straight onto your shoulder, head with ear close to sound board. Use the natural shape of your arms and hands, as if they were hanging relaxed by your sides.
Engage your back to allow your arms to float up: this brings strength and stamina.