First step is to lay it out and cut the sod.
Once the sod is removed I dug out a shovels depth to till the soil and to mix in some gravel along with it, this is just to get rid of some other material and to help level support the bottom of the beds a little better.
Once the bed is in place I put more gravel around the perimeter and then some compost/loam mix in the middle.
After that I put the removed dirt from digging out and it will get topped with more compost/loam mix to finish it off.
Cheers growmies!