>>2923302>Curious, what do you mean by under lighting? Light is coming in from multiple angles in your photos. Some of it is direct light and very bright and some of it is light reflected off surfaces in your surroundings and much more subtle. For example in pic
>>2923269 your model has some nice subtle under lighting accentuating her chin line but the direct light is overpowering and distracting. You need to work on balancing your lighting mechanics better.
Things you can do are buy or make your own reflectors and experiment with different materials which increase or decrease the amount of light thrown on the scene.
Pic related is examples of different lighting perspectives.