From Fallen London Wiki

You don't need two accounts. Send a skull to Mr Eaten's or Mr Iron's account (your choice), then cancel it immediately. You'll get the skull to use yourself. Just learned that trick myself earlier today.

<a class="external free" href="https://www.fallenlondon.com/profile/Mr%20Eaten">https://www.fallenlondon.com/profile/Mr%20Eaten</a>

<a class="external free" href="https://www.fallenlondon.com/profile/Mr%20Iron">https://www.fallenlondon.com/profile/Mr%20Iron</a>