Don, great looking piece! I like the curves that compliment each other (the gentle curve in the arm pieces and the seat and seat back).
Have you had a chance to sit in a seat with a similar shape/incline/curve to make sure you like the feel.
Also, how about making the ends of the arm rests (about where your hands might lay) rounded instead of squared off?
Also, posting the actual SU file might let us better 'see' your design, unless the file size is too large.