To depict realistic teardrops will not be a problem anymore. Here https://wowpencils.com/how-to-draw-tears/ is a simple tutorial about how to draw tears in eyes. It reviews the necessary art utensils and offers step-by-step instructions of the process. The technique takes little time and requires some patience, but it ensures the amazing true-to-life result.
0:27 Important Utensils for This Drawing
0:57 Step 1: Begin with Upper Eyelids
1:42 Step 2: Add Eyelashes and Lower Eyelids
2:30 Step 3: Eyebrows and Circles of Eyes
3:22 Step 4: Drawing Tears in Eyes
3:55 Step 5: Make Eyes Realistic
4:32 Step 6: Hatchwork