Cave render for critiques

This is my current wip. I cant seem to get the coins to lay right. I had them piled up and around the chest on the outside as well as the inside, but cannot manage to get them to “stack up” or even lay correctly. they all want to fall through the floor. any ideas on any part of this would be greatly appreciated!

update since original posted. I like the composition here a lot better but I like the lighting in the original more, but after adding in the water no matter what I change, I cannot seem to replicate the lighting. ( lighting is probably my biggest challenge as a new blendererererer )

this is closest to finish until I get some critiques I believe. I’m re-rendering now trying to fight with the fireflies. I deleted one of my lamps, hoping that will fix it. Any other ideas would be greatly appreciated!