One bit of constructive advice, I would suggest looking at photographs of liquid or liquid metal for reference to get more accurate shapes and shading. Right now you're using white with partial opacity for the highlights. But if you look at photographs of liquid metal, the highlights are fully opaque and the darks are really dark. http://www.media.jkstudios.tv/3d-animation-cgi/Fluid-dynamics-liquid-metal-CGI_018.jpg
One bit of constructive advice, I would suggest looking at photographs of liquid or liquid metal for reference to get more accurate shapes and shading. Right now you're using white with partial opacity for the highlights. But if you look at photographs of liquid metal, the highlights are fully opaque and the darks are really dark.
http://www.media.jkstudios.tv/3d-animation-cgi/Fluid-dynamics-liquid-metal-CGI_018.jpg