Do you have an instructor? That's the best person to ask. Also, why do you want to do this? For the most part really high kicks are a bad idea in real situations. A lot of schools like to show pictures of guys doing really high kicks but that is really just for show, don't get pulled into useless training unless you don't really want self defense.
It sounds pretty basic, but you mostly need to work on your stretches. When I was studying Sanda for a bit, I was able to kick much better after some intensive stretching sessions. It hurt like heck but stretching and stretching a bit further than you are comfortable with (not enough to pull anything, but enough that it's pretty painful) is the quickest way to higher kicks.
I have a little technique I used, firstly I waxxed my legs and you wanna watch Kaceytron's stream why you do it. Secondly you want to complete Outlast and cry for nomore than 45 precise minutes. Thirdly, you want to be friends with your leg and let it contact you first so it will start to miss you.
Hope i helped
Stretching, practice, and using ankle weights. If you use 1-3 pound ankle weights while practicing they will eventually get higher, because once the weights come off, your leg will go higher since your leg without the weight is lighter.
Try doing stretches.
Strech daily.
Imma good kicker but I can kick high from the side. I need advice on how to kick high enough to reach someones face ????
