Reverse pareidolia - seeing objects in faces 
As always with the VM, all hypotheses I can think of require significant mental gymnastics to make them work. But I think we have ample evidence that both VM text and imagery were not created in one go but in several stages. According to this hypothesis, the Sagittarius crossbowman was created relatively early and the nymphs added later. Also Pharma was created before B-plants, meaning the roots preceded large B-plants. There must have been a source. I also agree that source style may have influenced the style of the VM.
Assuming the one-author-different-styles hypothesis, I still find it difficult to establish an evolutionary time-line of the manuscript's creation.
As always with the VM, all hypotheses I can think of require significant mental gymnastics to make them work. But I think we have ample evidence that both VM text and imagery were not created in one go but in several stages. According to this hypothesis, the Sagittarius crossbowman was created relatively early and the nymphs added later. Also Pharma was created before B-plants, meaning the roots preceded large B-plants. There must have been a source. I also agree that source style may have influenced the style of the VM.
Assuming the one-author-different-styles hypothesis, I still find it difficult to establish an evolutionary time-line of the manuscript's creation.