The top one I really like the composition on, but I think the render could be blended better and some of the lighting effects toned down. They are...rather bright.and draw attention away from the focal.
Other than that, I love the flow, depth and text. The music sheet start behind the text is a neat idea and the colours are nice.
One the second montage. What an adorable cute child. My sister had a baby and now I'm obsessed slightly with cute kiddy pics. I kinda don't want to criticize it. But All I could say is maybe round off the extractions and blend them a little. That's all really.
Please keep it up <3