There is a post with regards to photographing more than one model,
https://www.uglyhedgehog.com/t-726705-1.html
in this case two women, like the link to multiple models.

The image works most assuredly and is due to the fact that both Violetta Storms and Kerri not only know one another but are vary close friends, having known one another for years, and having worked togeather may times. This is the critical dynamic when working with multiple models in a shoot. Of course mullicbill knows this and has used it to his advantage in making this image of the girls.

It is hard enough to get that all important dynamic from any model, to get it from two women in the same frame is even more difficult. What strikes a cord in myself as a viewer is that these two women are both comfortable with each other, but more to the point, that there is a 'chemistry' with the artist making the image as well.

I will push this idea further, any good to great nude photography is a kin to portrait photography in many ways, perhaps even more so than in that of portrait photography. Both portrait and nude images needs a strong chemistry between the sitter and the artist creating the image.

Often this seems to be assumed or lost with viewers observations. In fact it is more crucial than the many obvious issues of lighting, composition and the many variables that are often covered in comments. The truly good to great works find that certain spark in just this difficult and some what ephemeral quality.

In the final analysis, having been privy to a long number of posted images by this person mullicbill, he has a good track record of producing that consistency of 'keepers' with what he has been posting. I for one will continue to look forward to his posts knowing that his work is that of a rather accomplished producer of fine works.