Always strive to be the best writer you can be. Reading books by established authors published by well-known publishing houses provides examples of outstanding writing and editing that you should emulate. Most indie writers are still progressing to their best work. Some will be less skilled than you are, others more advanced, but to grasp the industry standard, read those accepted by reputable publishers. It’s good for your ego to read books from beginners, but to improve you writing, study techniques employed by seasoned, experienced authors.