I love the colors but the tip of the object if just to close to the edge of the picture. I would have like to see a little more space. Plus it slices though the center of the pic. This is not the best composition, but the lighting and colors are just beautiful
I think the DOF is too shallow in this instance - it makes the object look as if it's just up against a brown backdrop instead of a background that's out of focus. However, I do like the composition and the crispness of the "liquid copper".
6 - Unusual and interesting, back 'PC' to see what this is. Nice coloring. Criticism; difficult, perhaps a tighter crop at the top to gain more symmetry, not sure. Sharper too, to be able to discern better what this is, but unsure on that, because -- I do not know what this is, and that may not have been possible, who knows.