Oral sex has always been part of foreplay with me and all the women I've been with, so my experience with cumming on or near a woman's face or in her mouth is extremely limited, despite many decades of having sex.
There were a few times earlier in my life where a blowjob was all I was going to get, but when it was time for me to cum, all of the woman stopped sucking and just stroked me until I came. Usually the cum would shoot about a foot or so up into the air, maybe more if my cock was horizontal.
One time a girlfriend was giving me a handjob/blowjob combination as she was on her period, but wanted to give me pleasure and see me cum. She did that hand and suck combination thing, ensuing all 7 inches of me was getting attention. When I got to the point of no return, she just stroked me until I came. What surprised us both is that I started shooting cum about 2-3 feet straight up into the air! I was really horny and she did a great job of making sure I was totally stimulated and ready to explode!