Self Studies: Stoyko Exercise

FM Steve Stoyko has suggested the following exercise:

1. Pick a non-static Middlegame position
2. Try to evaluate the main variation of each possible move
3. Write down the evaluation and try to estimate the "value" of each variation. You can use any matric you like ("centipawns" or whatever you like)

The task should take a fair amount of time and paper.

Example:

(FEN  2b1kbr1/5p1p/2np4/1N1Npp2/rP2P2q/8/P1P2PPP/R2Q1RK1 w - - 0 15)