She maybe wanted it to be thick and fluffy. Some people like this look.
If it is for a boy, I would add a tractor in the field and then make a couple of lines that follow the stitching on the quilt to be rows of crops.
But first - I'd ask mom if it would be okay to do this. Tell her how much you like it but you wanted to add something really special so he could use it longer. Not so babyish.