game of small differences

How do you approach a game where you are rated very meny points below your opponent?

A few things are almost certain in this case;

1. Your opponent obviously knows more opening and probably more end game theory than you
2. the game can be decided by small errors which may be difficult to recover from
3. If you play a heavy theoretical line in most cases unless you are familiar with all the side lines etc you most probably will lose
4. If you have the white pieces develop methodically and set camp for the middlegame
5. speculative moves shall be punished [ruthlessly so]. So one has to be more than just abit certain when playing any move.                                      
   
   
   
6. In light of the above, I decided to take notes during the game and would not make a move unless I had analysed  it thoroughly
   
   
   Please have a look at the annotations and variations.
   And note the way development is crucial even in the annotated sidelines. but most of all enjoy.
   
   
   
   
   
   
   
   
   
   
   
   
   
   
7. My opponent and now good friend has given me the greenlight to post my analysis. To you sir I say thank you for the game.

instructive link for understanding the isolated Queens pawn

1. exeterchessclub