At the end of the day you’re a musician first and a marketer second. It’s always okay to bring in some outside help, but knowing the most common marketing mistakes musicians make will help you set yourself above the crowd by embracing the new opportunities available to you for promoting your music.
Knowing your end-game budget is key, knowing your music is key, and having a solid timeline is key. You don’t want to get caught 1000 bucks short, you don’t want to show up unprepared, and you can’t launch the product unless everything is finished on time.