Calculate your time
Proper planning of time is crucial factor in creating thesis or any other scientific paper, if person can manage himself correctly – he can overcome everything. Try to allocate as much time as possible to avoid any haste.
Choose topic with which you're familiar
Thinking of how to write good dissertation, you have to understand that initial result is directly related to chosen topic. Don't choose complex, unknown subjects to impress teacher, if you will write about theme that is familiar to you, it’ll be the best solution.
Explore selected subject
Every topic has its own nuances. Before you think that you already found out how to do a good dissertation, study this issue again to refresh your memory! It can require more effort to do it, but you will not have errors in work.
Do a research
Take an interest in how other people write dissertations on similar subject; it shouldn’t be difficult to find answers to all your questions including: how to write a good dissertation title, how to divide the work into chapters, plus many useful tips regarding style, format, etc.
Build an outline before you start writing a final version
Create dissertation plan taking into account everything that you want to mention and specify in your work. With an overall picture of the future thesis, it'll be easier to see where something is missing or what else you want to add. Once you make a decent plan, you can start completing it.
Reread the finished thesis several times with an interval of 2 days
To avoid grammar, spelling, style or other mistakes in your work you should proofread it and to do dissertation editing, don't spare your time, try to devote several days to make your paper flawless!