Well, not to be a party pooper but I am going to say something helpful.

If you are having problem with writing, you can do 2 things to ease in. 1) Just create a structure such as a) Summary b) Assumptions c) Method of data collection d) Data Analysis e) Model created f) Conclusion g) Appendices h) References Leave 1 blank page for each section. If you know what sub sections you will have under such headings write them down. Then as you keep getting things to add, put them under the appropriate topic. You can add remove or edit sections once you have started writing.

2) Other way is to write whatever is coming to your mind about the subject at the moment. Dont think where u will place it. Just write and then put in an appropriate section later.

Hope it helps.