If you had to write down general principles for every piece...

You know general principles like 'develop the center' and 'castle early' that generally help but aren't to be followed 100% of the time? 

How would you divide these principles by pieces? 

For example:

• Knight
  • Effective in tight spaces and earlier in the game
  • less effective on the rim than in the center
• Rook
  • Effective on the 7th rank 
  • Best on open or half-open files
  • Good if chained/connected with another rook
• Pawn
  • Best to avoid isolated and doubled-up pawns
  • Capture towards the center 
  • Getting a pawn chain to ranks 6-7 can be more valuable than having a rook at that point
• Queen
  • Don't mobilize too early or you'll lag behind in development 
  • Worth 9 points but less than an equivalent combination of pieces (etc- a knight+bishop+knight combo)

Things like this:

https://www.ichess.net/blog/queen-in-chess/#h-the-queen-in-chess-middlegames

Knights are short-ranged pieces. Knights should move foreward.

You can hear a Knight coming, but not a Bishop.

Bishops are sneaky.

I wrote it out

https://medium.com/@ChessJitsu/a-compiled-cheat-sheet-of-chess-principles-63cb5bc8b968