Learning to use light in nomad sculpt

i made this head sculpt a few months ago, back then when i shared the sculpt, i did not know how to properly use the light option in the software.

since then i have watched a lot of nomad tutorials, i learn that most users use a really high quality ipad to use this software.
i only use the 9th gen ipad. it has a very low storage, and while i was practicing the light option i learned that i can only use 4 light scenes. which is actually not enough if you want a attractive light scene.
i used a normal sun light two backdrop light and one colored point light to make the head look like this.
it was kind of fun to work on.