Well first of all I think this may be miscategorized, don't misunderstand me, this is not a poor work of music you've wrought here. It just feels like it might fit into ambient better than classical.
The loop seems to work rather well, even with the second or two of silence between loops it still sounds fine. However, seeing as how this was done for an e-card, I find it fitting, even if I don't know what sort of card that was.
Please contact me if you would like to use this in a project. We can discuss the details.