Need help ASAP In C# / XNA [Willing to PAY!]

Hello everyone sorry for the trouble, but I have an assignment for school due on Monday (two days away) Australian time. It is an assignment for my IT class in 11th grade. (Fairly basic for most people on here) I have a game it works, however I don't completely understand everything that is in my game, and I was wondering if someone in the Sythe community would comment on the lines of code I have and teach (or do for me) how to add extra levels and add enemies and so on in the game which was made with some tutorials and so on. I would be willing to pay money through paypal for your time and effort. If anyone could possibly help me my skype is cant_remember_it and I could then send the code in its entirety. Lastly sorry for the long and uninteresting post but thank you so much to anyone that can help. If it wasn't already established this is C# using XNA.