I would like to know how I could improve upon my Queen's Gambit opening since I am particularly fond of it lately. Most of the games that I have won, I have been able to win with the help of this opening.

Sometimes I will go through till about 3. Nf3 and then something will happen which will throw a wrench into the whole thing. The game I posted here 

Move 29 you missed Rxb4.

Also on move 5 Qa4+ would have released you from the pin on e2 and after 5.. c6, 6. Qxc4 black suddenly finds it hard to develop his b8 knight without trading it for your knight on e5.

How come you didn't fork the knight and the rook earlier?