Where do you get an arceus

first,you must go to oreburgh city.then,you need to have a bicycle to try come up from the slope.for more information,talk to the man that is on the bike.then,you may have to beat the trainers there.so,you enter the the mt.coronet.you need to go to snowpoint city and beat the gym leader candice.she is the user of ice,so you need to have pokemon that has the type of fire and use the fire move.then,you must have move rock climb.to find it,you may found it in along the way to acuity lakefront,but it is covered with snow,that move is in the back of the house.to find the house,just walk anywhere(up,down,left ,right).next get through mt.coronet and you will have to get azure flute.then,you will met the floor.stand there,and click a.you must click yes when it gives you a question to choose yes or no.after that,wait for a while,then you come up to the stage and you will met a arceus!!