Line Drawing Portrait

I made these portraits through Adobe Illustrator. First, I traced the face, ears, eyes, brows, and lips with the pen tool, and I drew most of her hair with the pen tool as well. Then, I drew some of her hair with the brush tool to make it more realistic. Also, I drew the butterfly with the pen tool and added some color, and I drew the butterfly's details with the brush tool. Secondly, I added some figures on the face as shadows with the pen tool. At first, I didn't know you could blur it, but then my teacher showed me how I could add that effect. Finally, I selected all the shadow figures and applied the gaussian blur in all of them, and it made it look more realistic. The last picture, which is my favorite of all, has the original drawing placed on the digital drawing. In conclusion, I enjoyed doing these portraits, even though it was challenging at first.