When my son was little and had the sniffles I would hold up a tissue and tell him to blow. Later, ( age 7?) I would tell him to blow his nose and he would go get his own tissue. This arrangement worked for a while but eventually he figured out how to do this all on his own. I thought this is how everybody learned this skill. Did you miss a step? You understand no matter how much you sniffle or how loudly you snort it will come back, right? Well, that’s what happens. And we can all hear you. So I am fairly sure I can’t hold a tissue to your face, but go ahead and blow, you will feel better.