will i pass test tommorow need answer asap

hi

i have a pre employment test at a quest tommoro i have been to a drug test for another job and it looks easy to subsituite for my firends clean urine i have a 1.3 oz container first is that enough 2 can i store the urin in my fridge overnight or should i frezze i have been practasing and it seems if i warm the urin up by placing the container on my heater than puting it in a pair of titey whites and i left it there for a half an hour and put the themometer on it and it read 95 degres is tehre anythin im doin wrong anything will help