Love of a Guardian Angel

This is one of many pics I've done for my fiance', Sarah. In this one, She and I are sitting together on the peak above a small lagoon in my "perfect place," where it is always a cool, breezy summer night, and fireflies are always blinking about. To explain the angel wings, she always insists that I must be her guardian angel, and only appear to her because I fell in love with her (basically: she thinks I'm too good to be true ^_^'). So I did a picture relating these themes for her. This is an older one, but please, critique. I can see a few flaws right off the bat anyway :P