The basic approach is a more straight forward technique. As I place each stone, I identify that perfect rotation and position, where it doesn't wobble; the perfect placement where it balances and is relatively stable. Through trial and error, I find pairs of stones that just 'click' together. Like they were made for each other. I continue this procedure as I place As I place each successive stone, As I continue this procedure, the stack grows. Each stone finds balance and its center on the stone below it.
The advanced approach requires more forward thinking when placing the stones. A lower stone might be purposely placed out of balance, (but still in a position that offers some sort of "lock"), requiring the weight of stone(s) above it to bring it back into its own balance.
Brick layers use a similar approach when they are constructing archways where the "keystone" actually holds the semi-circle shape together.
Often the safety of observers and passersby dictates when a form is complete, although the larger stones have more visual impact.