Angel on my Shoulder: progress

I didn't add much to the overall sketch but I started adding in the white. I like the fingers for the most part, a few darks need to be work on, but the knuckles are looking a bit wide to me. I think I need to work that out. I was playing with the idea of cropping the composition at the top to match the reference photo. I'm still at a loss for the background, but I just made the realization that I'm really happy I included my hand in this.