Skulls are often the creepy-crawly symbols to represent death and Halloween.
But we all have them, they’re a part of nature, and they’re a huge part of still life work for artists. They’re also a subject you should absolutely study if you want to improve your ability to draw realistic human faces.
This gallery should give you some ideas with a variety of realistic skull drawings. Some from real life, others from imagination, but all of them a sight to behold.