I like the first shot, but if you can remove the line at the top from the sun and the chin scrapes and it would make it even better. I am not fond of the second one. It almost makes me dizzy. Is it supposed to look in motion? I think it is a cute picture but I would just not do those effects. As far as the third one, it is great that the boy is off centered, but it is best to off center them where their face or eyes are toward the part of the picture with the extra space. Make sense? So in that picture it would have been better if he was off centered to the right instead of the left.
You did well. It can be hard to post and either get no replies or get replies that are hard to take. I have learned so much from this review board though. When people comment on your pictures they are just trying to help you. Keep posting and working at it.