The third horseman, famine. one horseman left!
I haven't painted horses for a loooong time, except the two other horsemen, so I'm well aware that the anatomy is probably way off.
EDIT: Tweaked down the eye of the horse
When the Lamb opened the third seal, I heard the third living creature say, "Come and see!" I looked, and there before me was a black horse! Its rider was holding a pair of scales in his hand. Then I heard what sounded like a voice among the four living creatures, saying, "A quart of wheat for a day's wages, and three quarts of barley for a day's wages, and do not damage the oil and the wine!"
the other ones:
A work in progress for the last one: