2. The four lights are farther away from the clothes and the lights are softer.

3. Make some shadows on the basis of uniform lighting. Shadows can be observed using frames.

4. If the background is white, you can enlarge the aperture, slightly fully expose it, or increase the value of the sensitivity (ISO), so that the background will be relatively empty and form a high-profile background, and there is no need for matting in post-processing (in fact, matting is very bad).

5. If the white background is blue, it means that the color temperature you set is lower than the ambient color temperature, which can be solved by adjusting the white balance.