Top 10 things to avoid as a beginner

[LucentTear]

I'd personally say something about using the autokey. I understand that it is a good crutch to be on, but it does limit how diverse your music would sound if you keep relying on the light grey lines.

Also octave overload is high mood and I've been trying to decrease it when it comes to my slower songs.

I especially agree with the Mud City mistake, since I am really notorious for that kind of stuff. My only advice (used with Grand/Electric Piano) is to separate the parts that stand out to you more as individual notes regardless of their position on the piano.