Well, a lot of stuff, but the easiest to fix is to stop making basic blunders, like your 13th and 33rd moves did. You probably win the game if you dont do either of those two.
To get better at that, you have to practice tactics. I always recommend chesstempo.com to people that need to practice tactics. Make a free membership (dont just do problems without a membership, it wont work out). Be aware that they start everyone at too high of a rating for beginners, and you'll probably get your first 5-7 problems wrong before your rating adjusts and it starts giving you problems you can actually do.
I really feel i am starting to get just a smidge better than my previous three posted games. I even had a winning game going and i botched it up. Please give me some advice. again strength and weaknesses. what do i need to work on the most.