Here is my original in blue.
Here is an ink/cleanup by Kali. Note that she very carefully preserves all the nuances in the drawing. The varied shapes and forms. The asymmetry. The flowing organicness of the curves. The construction.
Note also that many of George's parts have been inked on separate layers. That's so individual pieces of him can be animated in Flash. This is similar to 60s TV limited animation-like the Flintstones.Here she colored each layer so you could easily see how it works. Each individual part has to be inked all around, even where you won't see it in an individual frame.
****Note- see where I made the pencil lines thicker in the indentations of the smile line? That makes the cheeks and smile feel fleshy and full. Follow that through in the inking. It helps the expressions read.
The same thing applies to the lines that indicate the eyelids. They are thicker in the middle, which also helps you see the eye expression.
Note that wrinkles and minor details are generally thinner, but they still follow the directions and planes of the larger forms.
Individual teeth lines should be thinner than the line that outlines the complete set of either upper or lower teeth. That holds them together as a set. It's a hierarchy of important and less important lines. Big important forms generally get thicker lines. Details that wrap around the bigger forms get thinner lines.
If you are applying for inking or cleanup, these are stellar examples of what we need.