Irene,
I like this tree a lot. In fact, it might be a better candidate for a thread than the ones we have seen in the JBP learning thread. It's so hard to do well from a photograph, but in general I would suggest that either of the two sides showcasing the curve in the trunk should be your front.
Could you take a couple of shots using something to tie down the lower branches so they are not obscuring the trunk? I'd really like to see what the trunk does above this first curve.