First of all, let me congratulate you for clicking this sensitive photograph. It's not easy to pose at such a close range and keep your expression just right. The half open lips suggest anticipation.
Eyes looking straight in to the camera;yet retain the innocent look, as though the photo was clicked unknowingly, spontaneously. The skin tone is dull grey, portraying this shot as something that happened at the last moment.
The lighting is soothing, just a bright spot in the eye to make it sparkle like the wick of a candle in the dark, I like this snap very much.