I'll start... The biggest thing I've noticed that immediately improves my writing is knowing exactly who I'm writing for. Whether that's a specific person or a specific niche market, having a clear audience changes everything. The moment you have that perfect reader in mind, there's no need for any guesswork. You stop trying to please everyone (which usually means pleasing no one) and start writing with actual purpose. Your words flow naturally because you simply know what's going to resonate. Helped me a lot.