How do you do an at home facial?

I'm 15, and I have my skin care routine, wash, cleanse, moisturize every day and exfloiate once a week, but I want to give myself a facial, to really open up my pores and clean my face waay deep down.
But how? Store bought masks? Homemade potions? Steam? I have no idea where to begin?
Aand then how often, once a week?