Start with a song you love and do very well. Then, break up your project song into chunks. Work on those and expand until you eventually finish the song. This can take a long time and that's okay!
Joining online communities can boost your skills and confidence, but can also do the opposite. Be careful what you join, and choose carefully who you play with and what information you give out
For beginners, focusing on your accuracy to improve. However, further in your journey, working on speed and more ignoring accuracy can improve your skills drastically.
To improve faster, do harder songs slowed down. This trains your brain for more blocks, therefore improving your comprehension later, and improving accuracy due to responsiveness.