What's the idea? I'm usually up for helping with sketches, assuming I can get a decent mental image to work from. If you are willing to do the drudgery of spriting the thing, I'll help with the visualization, if I can. If I can't see it in my head, I'll tell you.
I'm thinking of a Huge Snowflake-Spider each of the pointy things in the flake being a leg, each one of those having multiple spikes.
Work your magic, I can help a bit but I'm more of a Digital Artist than a Pencil one.