This is for a game and is under a contract-so I am unable to allow any usage of it. But I am assuming you can pull inspiration from it. Better yet you can search up 'ice cave' on tumblr or Google images and there are tons of cool icey caves to help give you ideas.
I don't really remember seeing you doing a background concept with ice on it like this, so I'm happy to see this being done by you, specially when I personally love icy scenes. Nice bright added there too.