I feel as though you should have rid the picture of the original pennies. It would have been much more clear that way, and you could have piled up the source coins around the bank

I dont know whats up with the quality... It looks a lot better on windows image viewer : /

upload it in HIGH RES... there's a little square near the submit button.. (we all do it from time to time)

The coins are extremely disproportional, the overral images colours seem very akward and unnatural...but interesting take

The coins should have cast shadows

No.....

This picture seems to have only harnessed the basic shape of the source. Even the color seems so heavily modified...you should have kept the texture at least. The background and surfaces seem very weak as well. I would try to brush it up, look for a more detailed b/g, keep the detail in the coin, and make it seem real as oppose to so cartoony