The person that I made this coat of arms for is employed by the Red Cross, and works in a blood bank that ships life saving blood to hospitals. It's therefore only fitting that his coat of arms is a droplet of blood.
After drawing the main droplet, some "backsplash" droplets were added.
Highlights were added to the droplets.
Before mirroring the droplets to the left hand side.
Finally, a puddle of blood was added to the bottom of the design.