Overall good handling of the game and the Wayward Queen Attack although there are alot of inaccuracies.
6. ... Nc6? is a bad move because the knight was useful on d4 because if whites knights moves with 7. Nf3 or 7. Ne2 then white's best choice after Nxd3 or Nxe2 is Qxf3/Qxe2 when white has moved the queen 4 moves in the opening.
7. ...d6? is a bad move, blocking in the bishop and not developing. 7. ... Bg7 was beter, developing, preparing for 0-0 and providing more support for the knight on f6.
9. ... Be6?! and 10. Bxe6 seems okay for white as black's pawn structure is bad and in the coming endgame can be a weakness. 9. ... Qe7 was better.
10. ... e4!? is a nice way to complicate things. Good move. However your continuation was just bad. 13. ... g5!? is interestin but 13. ... Ne5! was better preparing for a knight jump to d3 where it serves a good purpose in cramping the white position and pressuring the bishop.
15. ... Qxf5?! 16. Nxf5! is good for white as the white knight is serving a useful purpose in cramping the black kingside and reducing your dark-squared bishop's activity.
17. ... Nd3+! is interesting but you should have kept the knight on d3 and let it complicate things before later trading it for the bishop. I am trying to think of 17. ... exd3 en passant as valid because black has a passed pawn (oh read about en passant and you will realized that 17. ... exd3 is legal)
19. ... h5? is a bad move as it loses a pawn to 20. Rhe1. Better was 19. ... Kd7! preparing for 20. ... Re1. Note not 19. ... 0-0-0 because in the endgame, WE WANT THE KING IN THE CENTRE (remember that, its important)
The rest was okay but 37. .... hxg3 en passant was better as now black has a passed pawn. Good game but sharpen your opening skills
I liked this game, because the opening of white (with the queen and so on...) is usually a bit annoying for me as I don't find ways to get rid of the danger, and this time I did reasonabily well. However, as you are going to see, I (black) am going to be the first one to be in inferiority of pieces (as white will take me a pawn I am not going to be able to recover). And that means I made some mistakes in the beginning.
I assume I won because of white mistakes more than because I played well. The thing is... Could someone help me analyzing this game (especially the first moves) to see what I could have done better?
Thanks so much in advance.