arctic laboratory

after seeing an episode of stargate in which they go to an arctic lab for research, i tried to recreate the scene.
heres what came out:

im using fake sss, vertex paint and ramps
the bachground is an hdr image but im not quite satisfied with it, it would be great if anyone had an image which suits the scene better.
overall i would like to increase realism and detail.
helpfull comments are very welcome

Firtsly it is the real labarotory in arctic. The snow is not good, bad materials.