I know that feel.
And this will shock absolutely no one, but I had a lot of fun with panel four.
New Jerry apparenlty looked a little heavy to somein the previous comic, but h's build is intended to be that of a young adult with a lot of functional bulk to him. He's got plenty of muscle, but not a lot of definition (panel four be darned). It's meant to be a figure that could be attributed to being a particular body type, active, and young.