The two files with this are A Guide to Resolution Writing and General MUN Rules (and tips on manipulating them) as well as one of my Resolutions from BEARMUN in Berlin in 2009.
Keep in mind, this sample resolution was written entirely by me, it was all that I prepared before I went for the conference. It has only 10 extensive clauses. At the conference, this resolution was combined with that of the Delegate of PR China, 8 of my 10 clauses were merged with hers, and 2 of my clauses made it through as they are in the final resolution. Our submitted resolution had over 20 clauses, each clause had 4-6 subclauses, and at least 8-10 sub-subclauses. The more extensive your final resolution, where you specify and explain everything, the better chance you have of it being ratified. This sample is the minimum you should have prepared before you go for your conference, so that you have something substantial to show for merging with other delegates' resolutions.
The Guide here was mostly what I found on the internet and distributed to my Society members (I was President of MUN Society). But I did include some advice that I have observed and experienced over the years of participating in MUNs with regards to the Points and how to reinterpret them to your benefit.
Hope this helps,