What scene does this painting describe?

1, his hand is behind the pencil, and his left hand picks up the still life book. After studying it carefully for a while, he raised his pen and carefully landed on the unfinished painting. His wrist is bent flexibly, and the blue veins on the back of his hand are becoming more and more obvious. The original flat ceramic vase became three-dimensional and shiny when the black line was handed over little by little.

He stared at the pen tip intently, and there was no one around him, only the rustling of the pencil rubbing on the paper filled his world.

3. She sat in front of an easel, holding a pencil in her hand, carefully observing the delicate flowers in front of her, gently moving the pen in her hand, sketching slightly green lines, looking up at the flowers and intently describing the plants in her pen. Some small leaves have the same angle, so she frowned and thought about how to write ... Finally, she finished the painting.

4. The temperature of paper and fingertips seems to be integrated, and the brush in the girl's hand plays in the warm orange light. She pursed her lips and her eyebrows were full of seriousness. As if at this moment, everything about her is on this drawing board. From shallow to deep, delicately sketched, her soul is in a grand carnival at the moment.

But when I use a brush, I can't draw lines well, so I draw them outside. In order to overcome these difficulties, I draw a straight line on white paper every day when I go home, and draw it with a painting brush stained with paint. After drawing straight lines and curves, draw complicated lines. My hands are very sour. Sometimes sweat and tears flow together, but I am very happy to think that a beautiful picture can be born in my pen soon.