The art of Richard Ewing ©
The profile of #3 is very arresting. His peach fuzz cone dome contrasts well with his wrench features. Your other portraits look strangely familiar. #2 looks like a hamster I know.
Number looks like someone I know, all are delightful to view.
These are wonderful. Love the profile and the messy geekiness of number 2. I love number 4 as well.