How big are the mirrors?

if you want to reflect the scene the size of the mirror will reflect how it looks. Here is a Simple idea make a big mirror with either a Cylindrical or Cubic part for the mirror make it like a glass and rack the reflection up to 100% and it will reflect it right back at you. it Depends also on where the mirrors are so it will need plenty of thought this is probably something you should take you time on and look at photo's on google for the general idea(I guess you would type in mirrior reflections or something). If you want to be really good you need to have an idea for the scene you are creating but it always takes time.I will try and upload an image and add it to this forum when I am done with something I am rendering in Bryce at this very moment. Don't ever give up you have a great idea and certainly very unique

Karl