Spliceable photographic lamp holder

If you are shooting portraits, you must first determine a main light source. Usually, the overhead light source (not directly above the head, but at a certain angle with the face) is used as the main light, so the lamp with the largest wattage should be placed on the head, and the lights on the left and right sides are generally illuminated indirectly with reflectors when the light is sufficient, rather than directly by the light source, otherwise it will explode. I don't know what effect you want. If you just want to find out, don't bother. Besides, what color is your background? This is very important.