Thanks Dave but it's really not anything artistic. I just bent a spline curve around the areas where I needed headroom, elbow space and hip room in the sitting places and that's just how it came about. I could have made it a lot nicer looking but would have had to squish things down more than I wanted to. I'm fast learning that a builder has to make compromises on a daily basis as a project starts coming together.
There are so many good designs and talented builders at this site that I'm sometimes embarassed to post about my simple little project but hoping that others might learn from my progress since I'm really constrained by budget.