Tattoos that depict nudity, offensive or inappropriate language or images, or violate Company policies (including policies prohibiting discrimination and harassment based on race, color, religion, sex, sexual orientation, gender identity, national origin, ancestry, age, disability or any other protected category) are not permitted.
No skull.
And your concern for small-handed CMs (whose small hands will usually be in proportion to a small body on which tattoos will be proportionally small) is just so heart-warming and totally sincere.
Now that you've show you've read the guidelines, it's clear now that you're just purposefully misconstruing them.