welcome to scale aerobatics...

roll direction is always at the pilot's option, the symbol is there only to depict the roll, with no thought given to direction. there are times (in upper classes, not in basic) when a roll needs to be performed in a certain direction for the sequence to make sense (like a 1 1/4 spin) but the symbols simply identify a roll element (roll, snap, or spin)

stall turn direction, pilot's option, but if there is a crosswind, it is best to stall into the wind, as the stalling with the wind will tend to carry the aircraft and describe an arc, rather than a clean pivot.

draw straight lines....