In regards to the cupid's bow, for people who have a less defined philtrum (vertical indent under below the nose), the cupid's bow and philtrum are usually proportionate to each other and to the septum of the nose - so for anyone with less defined cupid's bow/philtrum, the septum is always a good reference to getting everything proportional. I know very little about makeup but this trick I learned in drawing class
I'm so happy to see a tutorial of lipliner where everything is evenly applied and complimentary to the natural features 🤩 IDK how or when people decided it's a good idea to put the liner past the edge of the lips in a starkly contrasting/unblended color but all I can think of is little Richard's mustache whenever I see that 🤣 there's so many RU-vid videos of people calling THAT a lipliner hack, it's been difficult finding legit advice up to this point
Finally someone who has thin lips making the tutorial of lip lining❤ Thnx a lot dr❤❤ most lip lining tutorial videos were being demonstrated on big lips