Hi, without the text I don't know where you may be having problems but:
In Strunk & White (an online version is available
here ) they give some great editing tips and show how you can cut down sentences. Look at 13 - Omit needless words. You also need to bear in mind to omit needless repetition of ideas or themes. There is a good page
here as well which demonstrates this idea.
If you put up a little we might be better able to get a feel for where you could cut and then you could do the rest yourself. I'm sure that wouldn't be cheating