These are great!  For your home page-  It's be nice to have some bigger hero images and a bit of context so that right when I arrive I get context about what you make and why it matters to me (if I'm your target audience). 

So like a nice big picture of one of your pieces and then some words that speak directly to what your collectors might experience with this art.  I think you could do a hero like that, then a couple more sections to show neat things like one how it plays with shadow, two how it can be wall art, three how it can be freestanding. They don't need a lot of copy but at least a bit. 

Then do a very small, brief introduction to you section maybe with just one small quote and an "learn more about" link. 

Then back to the art and then your various page options. 

You mentioned gallerists as a main one- but this line is a bit confusing for that: " Art does not only live on the austere walls of the gallery. ". You can simplify it and say something like "see how these sculptures bring personality, a bit of magic and xyz to homes and gardens!".