I'll offer a critique of the first image.
It's a good idea, but not executed particularly well. You might have invested a bit more time on the propping. The box is gift wrapped, but only on the outside. A great portion of the image is filled with the inside of the corrugated box. A different type of box or some more wrapping might have helped. The reds of the hat and the shirt are a mismatch. You can get the hat to match more closely with a bit of time in processing.
Moving the subject out in front of the tree, working with a longer focal length would be an improvement.
Most important, invest some time into learning how to light for portraits. That will help elevate a image like this out of the snap shot league.
I think you may have been able to prop the lil guy up a bit more, getting away from the "sack of potatoes" look.
Great expression. Get mom to help by pulling his hand from his mouth immediately before each exposure.
I hope this helps.
-Pete