Right there now is some trouble with the perspective on the child pointing up. Also the body language of the other kid doesn't make it look like they're too excited about what he's are seeing. He seems distracted by something off to right of the panel.If this was really first contact, he should be jumping up and down in excitement and wonder. Remember that you're trying to tell a story of awe and wonder with this picture. The children should reflect that. I hope that helps!
Without you I have nothing, but with you
I have everything