The photo width should not exceed 95%-105% when scaling.
The height of the photo is mainly based on the overall effect of the photo when placing it. For example, Angela Chang does not have an 8-head body, and if she drags it to 8 heads, it will look fake. And unless the person's legs are particularly long, the length should start from the waist and change the length of the legs so that the proportions will be more symmetrical.
