asslamo alikum. oh you are from pakistan, good, I am also from pakistan. you have need these documents, your passport, id card, and birth certificate. and you have need these documents of your cousin , photo copy of your cousin passport, birth certificate, if he is married then marriage certificate coppy and your proof of cousin(any documents who prove that relation) then definately you have gain appointment on Canadian border, but if you got appointment your cousin will also reached there on border. take care.