A new edition of art work came, and yesterday you were given a skeletal and muscular analysis of the mouth of the portrait!

The mouth is two soft pieces of flesh attached to the upper and lower cheekbones in a semi-circle, and the outward form of the mouth is determined by the lips and teeth. The mouth consists of upper and lower lips, lip threads, mid-humans and lip ditches. The upper and lower lips are two relative “w” shapes, with the upper lip being longer, the upper lip being more distinct, and they are highlighted in the lower lip, with a upper lip in the centre, which divides the upper lip into two。

Positive mouth
First, it is important to note that the connection between the two angles of the mouth must have a slightly smaller feeling of connection with the two eyes and the right and right nostrils. Secondly, care must be taken to capture the differences in the size and length of the upper and lower lips of different people in the perspective of looking down or looking up. Thirdly, when drawing the edges of the lips, it should not be blindly emphasized the red colour of the lips, should not be recapitulated at the edges of the lips, should not be painted like paper cutting, but should focus more on the expression of the “body” of the lips。
Since the mouth feels a half circle horizontally, it is important to draw as much as possible the sense of the middle part, both sides of the mouth. Moreover, in terms of space performance, a relatively clear line can be used in the middle of the mouth to line up in the direction of the body, and then the line in the mouth corner can be relatively implicit, so that something rich can come forward, and the body will feel stronger when the whole thing goes back。

2. Three quarters of the mouth
The shape of the upper lip line, from the angle of the mouth to the crack of the lips, to the edge of the far and the corner of the mouth, is well established and closely integrated. The line and reflection of the upper lip, the shift in the ups and downs of the mouth, the projection of the upper lip to the lower lip, the change in the ups and downs of the mouth, and the connection to the face, including the feeling of the lower lip being luminous, and the difference in the light from the near and far。

3. Right side mouth
The breadth of the line between the upper lip and the cracks is judged by a combination of drawing perspectives and light sources. The higher you stand, the narrower the border, and when you sit down, the wider it is. We can see from the figure below that the upper lip turns into a suture of the mouth, which is precisely the key to making the line between the upper lip and the opposite. The shape of the lower lip extends from its mouth to its full surface, and it forms the top of the lower lip that turns in。





