These tips come from violinist and teacher Michael O’Gieblyn. Lots of gems in here. Some, like the “Planes” section, are violin-specific, but you can (and should) try to adapt them to your own practice.
For example, in the “Planes” portion, O’Gieblyn is talking about shifting the bow hand. Well, for me, a trumpet player/guitar player, I don’t have that challenge. Instead, I’d apply this tip to shifting position on guitar, or shifting registers on the trumpet. Make sense?
Check ’em out. Thanks, Michael!