Well I've placed a background and finished the magic circle. It's time to stick in the colour. I hope the colour will make it clearer what is floor and what is a wall or a pillar. This is turning out to be much harder than I had anticipated. (no great surprise there I think!)

IceTemple8.jpg

The dark points around the magic circle are pillars - but as it is ice, they are also transparent. I tried to keep them darker so that they are clear, but they don't really jump out. Any suggestions as to how to make this clearer would be greatly appreciated.