I don't know what equipment you have at your disposal, I can give you my method, it might help you.....
I use an APS-C camera, an old Pentax K3 about ten years old now. The lens is a fixed 35mm, on an APS-C, it corresponds to a 50mm which represents the standard vision of an eye, without pronounced distortion. I place the camera on a tripod. I adjust the level with a small spirit level recovered from a meter, which allows me to be straight to take my photos. Then I set the timer to 3 seconds, that is to say that when I trigger the photo, the shooting starts 3 seconds later, which avoids motion blur. I never use a flash or a desk lamp to light the figurine. Moreover, the subject to be photographed is placed on a support in the shade, that is to say that there is no direct daylight reaching the subject and could distort the shadows and lights applied with the brush. The camera is set with aperture priority (F22) which allows a great depth of field, so I am certain that the subject is sharp. I also set ISO 100. The camera will determine the exposure time, for example 4 seconds. I then check the result. If the image is a little too dark (underexposed) for my taste, I switch to manual mode and set the camera again with F22, ISO 100 and exposure time 6 seconds, or 2 seconds more to obtain a brighter image. If it is too light, I set an exposure time of 5 seconds. Manual mode allows me to freely choose all the shooting criteria. Sometimes I do a lot of tests before finding the right exposure time.
There you have it, these are just a few little tips that can make life easier, if you have any questions, don't hesitate.