Who it's for, when
Who it's for: couples who want to trust each other. He lets go, and whoever is giving is the one leading. No special talent needed: a blowjob is something you learn.
In the mood or not: if blowjobs only half excite you, the appetite often grows with practice, as long as the desire is yours and not a concession. And if one of your partner's fantasies doesn't appeal to you, you can say no without justifying yourself.
When: whenever the urge takes you, including to surprise him. Above all, give yourself time: the pauses are part of the pleasure.
Precautions: the glans and frenulum are hypersensitive, teeth stay out of the way (step 5). Tired jaw, your hand takes over. Sore knees or back, pregnancy, reduced mobility: choose the most comfortable position (step 3) and ask a health professional if you have the slightest doubt.
Health: if throat or jaw pain persists, if there's irritation or you suspect an infection, talk to a doctor. With a new partner or without recent testing, think condoms: herpes, gonorrhea, chlamydia and syphilis are also passed on through the mouth. And no blowjobs with a cold sore: herpes can travel from the lips to the genitals.