Excellent sculpture
and in such a small scale.
To make it easier to photograph, perhaps try a lighter background.
Cameras have a hard time with a contrast between light and dark; a black cat on a white sheet comes out as a blob with eyes and a tail.
If you check the reviews section with Guys entries, he often uses a lighter background for unpainted 'grey' figures.
The camera will capture more of your work, and lets us see and admire more of the details you put into your 28mm figure.
cheers