Where did you study art Junk or is it just a hobby? Your better than 80% of the artists who get paid big money to do political cartoons for newspapers and magazines. I hope you do this for a living.
PS The Miyamoto pick is my favorite not because of its comedy but because of how detailed it is and how the backgrounds look highlighted with simplistic 2 color shading. It seems like you took the longest on that one but I'm probably wrong.