tips for aquascaping?

[props]

neone got any tips on how to do it properly
got a bit of corals on the tank now so i just want to change rock formation
and probably take a couple of inches of sand out at the same time
got buckets ready to go
just concerned about my fishes =o(

should i do it like this
ie.
syphon some water off
remove corals n place 'em n containers
take rocks out
catch em fish
take sand out
?
i'm also thinking about taking the fishes out at night
it'd be a lot easier to catch them
xcept the ones hiding underneath 'em rock

ne suggestions would be much appreciated guys

thanks