Learning how to draw the teardrop or a water drop in an effective way requires you to understand that the tear is a transparent organic structure. This means that light moves through the structure and refracts light backward. This means that the teardrop works in a similar capacity and allows the light and shadow to move around the tear and be present on both sides of the tear. This means that there is going to be a shadow on both sides of the tear regardless of which direction the light source comes from. The same applies to the light reflections in the tear, which means there will be a light reflection on both sides of the tear. Because the structure of a teardrop is quite abstract, we can also play around with distorting details within the tear. This is a realistic representation of what a tear or transparent water drop will do, which makes it an easy structure to draw.