I suppose I'll add a few of mine.
I absolutely love the Bird Opening as white. I play it almost every chance I get.
Very nice games, very well played and also very well annotated.
In the first game, I was at first wondering how would you make use of your dark squared bishop, and I liked how well you managed to do so with the e3-e4 break and Be3, allowing the bishop to play along the g1-h7 diagonal, including the winning skewer 28.Bb6. You had very good coordination between pawn structure and pieces' play in general, and that is something that inevitably brings success, especially with the proper exploitation of your opponent's strategical weaknesses.
In the second game I liked the way you created your attacking chances by opening the appropriate lines for your pieces and developing quickly, also with sacrificing a non-important side pawn for better development. Your attack was inevitable with such a positional advantage you created, while your opponent didn't manage to have any compensation in the pawn won.
In the game you lost, I think 29...fxe5 was the major mistake, because it weakened g5. As you said, 29...dxe5 would have been better. It would have guarded g5 witn one more pawn, and would have also allowed your queenside pieces to take part in the game, because the pawn on d6 was blocking the 6th rank for your queen and queen's rook to defend g6 or to relocate to the kingside. A rook exchange after 29...dxe5 would also have allowed you to bring your queen's rook to a more active position on the open d file. About this game, I think you could have also tried 35...Rh8 instead of 35...Nf6, so that you would have had f6 free to play Bf6 at some point, especially to block a possible rook check along the f file after a rook lift (with your queen on e8 and a knight on h7), while the knight on h7 would have been one more defender of g5.
In the last game, you managed to put an end to White's attack and to counterattack in such a way that he was unable to defend. Your opponent exchanged his active pieces too early, and you also managed to win material while you kept a solid pawn structure against White's weakened one. So at one point of the game White had no obvious way to make progress, and had to defend instead, with a worse position and being behind in material.
Congratulations both about the games and about sharing your in-game thoughts with the annotation which I think is even much more valuable than showing the games by themselves. I have enjoyed them and I have learnt much in the same time.
Qb3 is even faster.great game