Then according to the skull structure, divide the plates and outline clear lines. The bone structure must be determined.
Then determine the light and dark surface through the light and dark dividing line, and adjust it from the light and dark dividing line with 5B soft lead. Don't forget to project.
Then, by changing the light, we can start from the darkness and correct the untrue places at any time.
It's set at the beginning, put it next to the plaster and squint for comparison.
Because it is too heavy in the dark part of the plaster skull, it is an old method to learn to change the tone with a pencil instead of an eraser or beat with a cloth. In the bright part, it is suggested to use hard lead for 4 h, 5 h and 6 h to highlight the texture and tone of plaster.
Note that the projections of changes caused by the concavities and convexities of eyes, cheekbones and pear-shaped holes are always synchronous.
After the tone is generally good, sharpen the dark part with 2B pencil, and then slightly punch the blank part in less than 3 hours. At this time, you can use the rubber cut by the knife to correct the edge of the line.
Finally put it next to the plaster head. Don't change the lights. Look at the plaster again with your eyes narrowed. Please correct me if there are any shortcomings.
It's almost the same after the revision.
It takes about 4 hours for beginners to draw a skull for the first time, but it's only a rough idea.
If you are skilled, you can finish it in two hours.
Skull is mainly to practice the sound change and line direction on the round surface.
The most important thing is to lay the foundation for future plaster head portraits. Understanding the skeletal structure under facial muscles contributes to a more vivid and profound image portrayal.
Generally speaking, Voltaire needs tougher lines after practicing skulls.
It's nothing. Look at other people's paintings and sketch from different angles according to the real thing.
As for videos, you can search online, and there are many.
I hope this answer is helpful to you.
References:
zhidao.baidu.com/question/ 137480430.html