Awesome suggestion, Lucanius. I'll consider those suggestions for my future works and thanks for the fave and comment. :)

Well, just a suggestion, but The reflections don't have to be people or anything really. Memories are often blurred and tend to fade. You could make something that is visible and yet undefined. Let the viewers draw their own conclusions with the piece and I think it will have an even deeper meaning. 

With that, the possibilities are endless. One could be even colored reds and oranges as a distant memory of a nearly forgotten sunset... Now I'm getting carried away in my own imagination... very nice piece. 

I drew those pieces from scratch, didn't expect it to look like Habbo's Ice patch in the end. Guess you can say that the concept was inspired by that.

 Looks like Habbos Arctic ice...?

Hmm, I wanted to show the memories on the glass but due to the restriction that no creatures/characters/buildings are allowed, not sure reflections of someone is fine but I guess I should omit that after all.

You can say that the piece of glass could only reflect the memories when someone is looking at it, or maybe it'll gather and form something. Those pieces of glasses somehow has many possibilities of what they can do.

The story is good! but i think that maibe, just maibe, you should trie to show the memmories on the glass! just don't forget to save this one just in case!

As for the chalenge...whell...it's almost sickly-strict, but i hope you get in!