How to write a good light novel or any other story

I am just a reader. And while I have 12 years’ worth of reading light novels, mangas and fantasy books, I still lack the endurance and devotion to truly write something I would put my heart into, which would be more than just a silly small thing with 10 chapters. Yet I became capable of finding faults within other novels so much that I can no longer stop myself from putting it somewhere. Especially because sometimes those faults become the reason I can’t read my favorite novel anymore. It went downhill just too much. So this is my collection of the aspects and tips on how to make your writing a better quality.