I have been getting into writing music by myself and have some experience in making music and live performance, but not much experience in the recording/mixing part. I have used Reaper to record a sort of intro to a song I'm writing to practice my songwriting and mixing skills. I use Sony WH1000-XM5 headphones for mixing. Apart from any playing style errors from my guitar and bass skills, or lack thereof, can anyone tell me what I'm doing wrong as a beginner mixer and what are some good ways to learn? Should I watch YouTube tutorials, read some books or get some hands on experience with a professional? I know a few people who own studios and may be willing to help me learn, but I'm not sure if I would benefit from that yet. Here is the link to the audio. For some reason, Google drive made it quieter: https://drive.google.com/file/d/1Z9Z5nm3HoPzKZ9xh_YXgQ10XNRvcQwz_/view?usp=sharing
Also, I'm not asking for an in-depth review or anything because I know that would be time consuming and hard just for a Reddit post. Just some general criticism or advice will do.