What can i do to not p out when getting a tattoo?

i have a little problem of ping out when blood is being taken out or away from me.... im not scared of needels...im not sure about being drunk when i do it...cua i know the liquor will num a lil but bleeding is suppost to be worse,,,,,i have one tattoo already and ped out then but still finsihed it but i want more..please if you have any advice i need it ...thanks...miami pincess