Okay, even before reading your comic, I got a feeling that this book was inspired by the show, 'Cobra Kai'. Anyway, can't wait to see what your comic entails.
Okay, where do I start?
1) Your Cover
You need to add color to it! Black and white may be your style, however, coloring it would make it more vibrant and lively!
2) Your Synopsis
Please, can you kindly explain why your synopsis is different on your other platforms? Both the synopsis on Webtoons and Tapas are totally different! Please, can you consider making it consistent across platfrms? This way, your audience won't feel that they are getting totally different content than what was posted on another platform.
3) Your Art
Please, kindly try to be more consistent with your art. Some of your artworks are more advanced than others. Unless you plan to keep it that way for the duration of your whole cover, I don't advise you to go on this route. So please, kindly consider a change in it.
Hope I was helpful, good job. Keep on going!