Sobek was depicted as a crocodile.
Sobek was the Egyptian god of the Nile which was believed to have been created from his sweat.
As Sobek possessed the strength and nature of a crocodile, which the Egyptians both feared and respected, he became a symbol of the Pharaoh's power.
The Nile, which was full of crocodiles, was important to the livelihood of the Egyptians.
It therefore made good sense to have a god like Sobek who could appease these ferocious beasts.
You can click on the link or sketch above for a larger image that you may use to help you with your drawing of Sobek.