The works look quite the same to me.
I think you should try to use some more techniques or at least finding sth which makes them unique.
As Zbrush simplifies a lot now. you would need tons of hours with other programs, producing somethin simmilar to what you do.
But this can go in teh wrong direction taht you do some kind of mass production. This rubs the uniqueness completely. I can’t see any expression inside the pictures.
It’s nice to look at. This is true. I would put some of them on my wall for sure, but it’s more like decoration, Im sure you could do more.
Try another Renderengine, better materials, less basic forms.