I love Art like this! Reminds me of some Bryce "sculptures" I've done. I like your experiment! Especially the "layered" effect you've achieved on the top of the sculpture.
Very nice experimental results indeed. I like this a lot better full view than I expected from the preview, although I still wonder if I might not prefer another colour to yellow. The title confuses me a little - is 'commet' correct or should it be 'comet'? I suppose because I read it as the latter initially, I tended to expect a more space-like colour for the background. Then again, this could be falling towards a yellow planet...
Hope to see further experiments along these lines - how are you making them?