I'm not an expert, but I can be honest...
Your designs are terrific! The first one is so crisp and clean as it is. It is a great image, too! I really like the design of the second one, too, but it might be better with a little clean-up work. If you are cutting out around the Mickey head, the excess around the outside won't matter, though. Maybe a bigger, catchier font for the wording would help it stand out a little more. You did a wonderful job on both of them!!! Please keep designing, I would love to see more from you!