The main things that I would like to draw your attention to: 1) The names variables and methods should be clear and concise, don't skimp on characters. 2) Methods should not exceed 30-40 lines, they are intended for solving a single specific task, and poor methods do everything.
Check what you write. Mind the tenses and forms. Check in translate.google.com or ask colleagues for help. The style and spelling of your writing form the impression of you and your team as a whole. You can agree that the phrase “I work Java scrpt, me have large experience work” sounds ridiculous. Our customer reads the same when you forget about tenses and forms of verbs.