my first impression is that they did really well finding the shadow in the picture. my eye is drawn towards the light in the photo. one the background is not in focus and its intended to be to focus on the hand and the shadows in the hand it is nicely done. the feel these pictures give are happy and very colorful. i like the lighting and the shape of the shading in them. there isnt much to improve on you did good but you could always change the focus on some of these and make them clearer than they already are. maybe change angles or get closer to the hand. my overall feeling of this photo is that it is very happy and cheerful. it gives the feeling of fall.