Yeah this would look much better if there were some reflections on the glass. I'm not too keen on the transition between the vanilla, chocolate and strawberry sections; I've never seen an ice-cream melt in such a precisely ordered fashion. Also, with that many colours, you can very easily anti-alias this.
I think the glass surface could use some more fake reflections. Right now, the ice cream looks like it is lit from above (or below) and it's melting (notice how the melted part have already filled up the cup.)
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