The video below from Joe Albano's complete course, 10 Common Panning Mistakes, explores one common mixing mistake: hard-panning. Basically, hard-panning in most all DAWs sends the instrument/sound to one speaker only and can make it stand out unintentionally in the mix. Therefore, you'll notice it negatively impact the cohesion and blend of the entire mix.
There’s plenty of tips and useful explanations in this video here that can be applied to mixing all styles of music.
Watch the video tutorial on hard-panning here:
Improve your panning mixing techniques & watch the complete course, 10 Common Panning Mistakes in The Ask.Audio Academy here.