19, 5’4, big round eyes
Botox is widely used to "open" the eye, in your case you'd like it to do the opposite - not recommended. It's possible for botox to "pull" the upper-corners of your eye for a "cat eye" look but it's temporary and would be opening up your eye even wider (given the pictures) - which you don't want. It would be to your benefit to research "scleral show" and treatments accordingly. I recommend a Canthoplexy to reshape your eye towards what you desire with a possible Blepharaplasty to reduce any under-eye hollowness.Also fillers have the potential to reduce and eliminate hollowness around the eyes, but attempting to "reshape" your eyes through it would be detrimental to your natural beauty - you always want to look like yourself and maintain your natural look. It's important to know that surgery would be the only true option to change the shape of your eye, permanently; with results that you want. It would be a waste of your time and money to attempt to reshape your eye for a "more almond" look through injectables.
It is common to use botox to change contour. However, botox works to relax muscles. It would be very difficult to use botox to "tighten" the lower eye lid. In fact, botox used in relaxing the crows feet may make eyes rounder in appearance. Using Botox to change your brow shape may give an illusion that your eye shapes are different, so that maybe something to consider. Hopefully, this is helpful.