In these 3 photos, the first one is a lowkey value which is the darkest photo out of all of them. The shadows and little highlight of my hand makes you really have to look at the image to see the shape of my hand. Which the little highlight helps with. The second photo is a highkey value which is shown through how mostly white and highlighted the photo is. There is barely any shadow showing because of how much light is entering the photo. The last photo is a broad range photo which shows a middle value of a lot of grey but still some shadow and highlights throughout the photo.
This is really great! I think it shows High Key – Narrow Value Range and Broad Value Range very well but you’re missing the Low Key- Narrow Value Range. A possible option could be taking a picture in a very dark place where your shadow is cast upon your hand such as a closet.