Vulva looks are not particularly important as other features of women’s bodies. In the cold hard light of day, when not in the mood, it can be considered unattractive, but this disappears completely with the onset of horniness. Cleanliness is the only thing any girl should worry about seriously. This can eliminate all horniness very quickly and cause a man to leave without notice.
A guy just will not want that taste or smell of a dirty vagina. By contrast, if little smell or taste then sensations of touch with lips and tongue can be freely enjoyed (i.e. it is not being suffered or done out of obligation). Then, personally, I love it, but it must be clean and smelling pretty good.
In addition, tattoos, piercing, and those stupid Mohawk trimmings are a powerful turnoff for me. I have never seen a tattoo anywhere on a girl that improved how she looked. And not to mention those Mohawks, common women shave it all off.
I guess the best-looking vulvas are the ones that are clean, neat, and tidy, including hair. Baldness is nice, but not by any means necessary. Just neatness is nicer when accompanied by cleanliness.
Ugly vulvas would be ones with masses of hair, where you cannot enjoy the visual signals, as well as making important stuff harder to find, and getting in your teeth... Piercing, tattoos, Mohawk trimming, etc. Genitals of both sexes are stupid-looking things and there is nothing you or I can do about it.
They ALL become highly interesting (depending on your homo or heteronyms) when you are horny, and adornments become just so much crude distraction to the real point of it all. And being relaxed is most important of all if you want to find how to make each other and yourselves happy. This allows your partner to relax too etc. So like the secret of wearing a good dress, forget you are wearing it. You cannot change it so accept it and get on with stuff you can.