[vash]

WD is correct.

getting the subgrade packed down is key! i seen them just pour down crushed rock over compacted soil. some simple rebar at 12" centers..and a simple mix.

as far as finishing. most folks just broom it. you stamp and color it, cost goes up.

i am farming out this job. i will do the survey, to set pitch..maybe pull up a special conc mix #from one of my state projects..and let the pros put it down.