I'd feel like I'm preaching to the choir. I have seen what girls discuss in terms of looks and the depth they go into and things they discuss is far beyond a male simpleton's mind. I have never witnessed two males discuss the curvature and depth of a philtrum. I think a personality/behaviour tip would be more beneficial for the opposite sex.
Weight loss (if it it's necessary) + weight lifting for a better physique. Emphasis on the latter since a lot of girls genuinely commit to pointless and fruitless diets to hit an arbitrary number on the scale at the expensive of their health.
Take care of your skin. Find a routine on the myriad of forums out there. It'll take a while to find something that really suits you.
IMO every woman should try the minimalist make-up look. It kills on facially attractive women w/ fortunate skin. Although (Masha'Allah) I will acknowledge that most Somali girls have good skin. I understand that it doesn't work on all girls. Yes I understand the difference between painted on face, heavy make up and light make up.
Be4 I get accused of pushing an agenda (and I definitely am) learn to dress. Too many women don't understand the difference between attractive and provocative. You can 1000% come across as objectively attractive while being modestly dressed. Do I need to pull out lollipops for a quick demonstration?