It is all about the female gaze which, obviously, includes the erotic feelings of women, which are included in this post:
1) First things first is shaving your pubic hair entirely.
Women, thanks to the "unsolicited dick pics" meme that very often feature nasty, untrimmed, pubic hair, they have now collectively been repulsed by this, and so the majority only like dick and balls shaved.
1.5) Though, in the rare scenario where some girl likes hairy men, they ONLY like it in the area above the penis, and nowhere else like in the shaft, balls, in-between the balls and ass, etc. The reason for this originates on overall hygiene and aesthetic pleasure, as unruly pubic hair, for the female point of view, is as disgusting as us seeing those pictures of /cgl/ related to menstruation - back then when there were biological women posting there.
2) The second step is obviously being hygienic in all parts of the body outside the dick.
I won't develop further here, but I thought this should obviously be mentioned as having a body where the dick and balls are amazing but not everywhere else makes things futile.
Related to hair, mandatory shaving the ass and ass-hair trail is a must. Optionally, shaving the belly trail, chest hair, armpits - especially if you cannot grow much and just makes you look like a wimp.
3) Now the body being aesthetically appealing, Only use Dove Sensitive soap on your dick and balls; using this will not do harm on you as it would a normal Dove soap given the difference in the quantity of chemicals for each. The main reason why I said this brand is because I have tried using the normal one plenty of times, cleans and makes everything softer and sensitive, but it hurts my dick badly. So, what better way to get an alternative with less chemical bullshit?
3.5) NOTE: if this doesn't work, find other brands that also get labeled as "sensitive" and related. NEVER GET THE NORMAL ONES unless you're M as fuck.