I started with a shape for a gate, or threshold that you have to walk through to get into the garden. Its inspiration comes from a variety of places, so I can't give any one credit. There is a fair bit of trimming and pulling to get the shape where I wanted it. Its right to me.
The threshold gate frames the pool and rear most gate on the raised sun deck. Its not just a simple archway, but has a raised floor you have to step up onto or over.