A refrigerator scene with blender internal… on 1920x1080p i dont know how others do it so good with blender internal renderer, mine look close to crap -_-
i would recommend you to use cycles.
Clearly…
And try also to make a smoke simulation on the ice (or an alpha found on internet). Where does the light come from ?? I’d suggest to model a light, duplicate it maybe to have one in each level and use it as youre keylight (mainlight) and light from the back. Then in front, use a fill light (area light on internal I think and a plane with emission on Cycles) just to rise up the level a bit. Maybe… if you want of course and if you find the effect good, maybe I’m wrong.
Yup thanks for telling me 
i was also wondering about lightning okay i did a cycles version
" www.blenderartists.org/forum/showthread.php?377231-Cycles-version-of-Frozen-There!&p=2910468#post2910468 "
you can read why it is grainy 
but yea i appreciated your comments , made me think part of this community