I also agree with Farmer's thoughts. Lose the rocks OR use them in the left rear to create height, if possible try to keep the driftwood as it is. This would create a dramatic elevation variance. The tank would be more interesting. Them the left would be planted with taller plants to further enhance the effect, lower growth or low trimmed plants to the right side. This would create a hill to meadow or island to sea look. Try to hide your heater/plumbing in the left corner to complete the Aquascaping Contestant level look.